This discussion is taking an unexpected turn, but I love it! Keep it coming.
I confess I'm having a hard time with the timelines of publishing. I'm a software engineer by trade, and we ship every month. In truth, it took me a month to write my book and it was crap*. The following year was when I improved it, learning a lot from places like here and also querying. In hindsight I should've wait longer to query, now it's too late. (In my defense I had a third-party review my work and they said it was ready; it wasn't.) I stopped my second round of queries in September and since then I'm editing the book. I consider the money I'm spending in editing as tuition to improve my writing skills.
Anyway, my decision to go for broke was based on what I see in the industry. Scalzi, one of my favorite current authors, gave his first novel for free in 1999 (before self-publishing was available). The novel is not on par with Old Man's War, but it probably helped him improve his skills. The Martian was also self-published at first. I suspect that the changes in person and tense might have scared off any agent (it's in 1st and 3rd person, present and past tense). It's not that agents are dumb; a bad decision may hurt their business, and since the pool of work they have is so large they can get the best of the best, and be safe-ish: books flop all the time even though they looked good on paper
I've read somewhere that 1 in 500 novels make through agents and publishers, and I assume most of them are real writers or people working on the craft for most of their adult lives. I'm not a writer, so my odds are lower. This is not just a guess. Based on querytracker, I should've had between 5-10% partial requests but I had none. The only requests I got were from a writing conference, and they asked for the first three chapters. The queries went nowhere.
It's been almost a year and a half! I know this is nothing when compared to what most people go through (I met a woman in the conference that was trying for 30 years!), but I truly want to end my trilogy. I have this urge to write the second and third book: my characters are waiting for me, and my wife, who's my #1 fan, keeps bothering me to finish it because she wants to know what happens!

But I can't start them because changes in the first novel will affect the others. And, I'm learning during this process.
*I did say that to an agent at a conference and he still requested my novel!
