Can I ask how long you've been writing, where you're up to now in this process, and whether (you don't have to answer this, but it would be helpful) you have been trade pubbed already, following this plan? (trade-pub being what you are aiming for..)
I believe we've discussed this before, but I came back to fiction-writing last November. The first draft of that first book took several months to finish, because I was building my routines. I then started writing the sequels because I wanted to write the sequels (which got faster, but was still slow). The problem was that, because I couldn't find betas at that point, I jumped the gun by querying and queried badly.
So now I'm following the steps as prescribed by published authors and, because I started that process on my fourth book (since 1-3 were part of the same series, and I'll have to wait on doing anything with #1 because of that botched query process), I'm still taking that fourth book to the point where I can query it. I finished drafting book 4 in July, waited a while before proofing/polishing/revising, started to look for critique partners back in... I think August or September? Several weren't a great fit, but we exchanged early chapters (some stopping after the initial change of 2-3 chapters, others going a little further). The first one to make it to the end didn't strike me as being critical enough, and honestly, even the one I'm finishing up with now doesn't feel critical enough, although at least they've flagged more errors/issues than anybody else in the process.
However, the problem is since July I've drafted four more books, so I have to do that same process for those, too, and I can't use my same critique partner for that (they're looking at my fantasy, but the other stuff is horror (and one wound up being more of a YA horror)... well, one of the other ones is *also* fantasy but it needs more work and I'm not sure they'd really help with the possible structural issues with that one, which will very likely require substantial revision)
That's why Unimportant's assessment is exciting -- if I can focus on 0-2 for self-publishing and it works, my turnaround time would skyrocket. In fact, if I could just cut the critique partner phase out and rely on betas instead, I'm not losing time in the process, it just becomes a rolling time-frame.
It certainly takes other people less time to pick up these skills. But the thing is, they are three different skills. I see an awful lot of writers who believe they only need the first one, or that the other two should be nothing but quick-and-dirty sanity checks.
Admittedly, revision is one my one big blindspot (since I'm never sure what will or won't be a problem), which is why I finally decided to try critique partners, but... even then, they haven't been a substantial help. I'm hoping once I get to beta readers I'll get a better idea of what I need to do on the revision side.
How much time are you planning for each of these steps?
0) Planning/Outlining
I tend to do it concurrently, so it doesn't impact my time-frame. (ie, I plan my next book while drafting the current)
1) Drafting
3-4 weeks for a 85-95k word novel. I'm writing off the 89k one I drafted in 18-19 days (where I nearly finished in 17-18) as an outlier.
2) Proofing/polishing/revision
Again, I tend to do it concurrently because I can only draft so long each day. However, it hasn't been a 1:1 outcome which is an issue, but that's partly because the critique partner stuff tends to be more time-consuming
3) Critique partners
This is a complete unknown still, because the first time has been so rocky. The final one has been the best of the bunch, but even then they don't even seem to have enough observations and their work has a lot of potential issues. On the plus side, they've been pretty good about spotting my typos and they've flagged a few potential issues.
I'm just not terribly enamored by this step. However, I assume it'll get smoother with time as I eventually find people who are a better fit.
4) Proofing/polishing/revision
Again, it's concurrent. The smaller issues I've patched I've gone alone, but the high-level revisions won't really be covered until the end. So far they've had one major criticism and I'm not sure I have a real fix for it, if it's something that needs to be fixed. I'll see how that goes when we hit the end and exchange final notes.
5) Beta readers
It should be largely concurrent, unless I'm trading beta reads at which point it closer to being a critique partner situation so I would consider that an abridged step 3. However long it takes beta readers to go through it, it should be a rolling time frame.
6) Proofing/polishing/revision
Again, I'd try to handle it concurrently. While drafting one, I'd be revising the previous.
x) Possibly repeat
Complete unknown, but it'd still be something I try to handle concurrently.
7) Querying
Ugh. At some point I need to build a real system for this. I get screwed the first time because the resource I tried wasn't specific or accurate enough in some cases. But each time I do it, the process should improve since I'll be building it out.
But basically drafting is a constant, and the rest are just folded into that process. The one thing is I need to get better about maintaining a proof/polish/revise schedule, but the problem is that I like to have a time gap between writing and doing that... and, well, right now there's not much of a gap.
Until I wind up get book deals (assuming that happens at all) and an editor's time constraints force me to stop drafting, I'm going to keep drafting on a daily basis.