On one hand, I love it when I discover a new author and they have a bunch of books out. Especially if they are in a series, I read one, and then I can devour them all. Examples here might include the House of Night books, the Tiger saga, heck even my discovery of Christine Feehan or Lynsay Sands years ago was after they had books out.
But on the other hand, I also like discovering a new author who doesn't have a pile of books yet but who also has talent. I get to watch them grow and see what they will do next. Veronica Roth, Lauren DeStefano and Gena Showalter (Note: I'm talking about *when* I first read her work, which was via The Stone Prince.) are the first to jump to mind here.
Now, the catch with everything above, of course, is that these authors are all trade published. We don't expect them to come out the door swinging with a backlist. In the first examples, I discovered these authors as I was discovering the genres they wrote in. P.C. & Kristen Cast's House of Night series was what I consider my "official" introduction to YA, and Christine Feehan's
Dark Legend and
Dark Magic were my introduction to paranormal romance all the way back in 2001(?).
I can somewhat understand how that might be different for self publishing. We're swimming upriver against a million other books and we don't have the advantage of having a team of people backing what we are releasing. We have to prove our work isn't crap and we have to find a way to get our work in front of people in the first place. Having one's name pop up consistently through regular (not spammed or rushed, mind you) releases that readers can count on is one way to do that. It allows you a better chance to retain the spotlight, gain repeat customers and (through these two things) sell more books / gain more readers.
If you have the self discipline to actually wait until the whole thing is done, my hat is off to you. (I won't lie--I'm generally very patient with the *quality* of my *book*, but the thought of waiting until I write all four that I want for these characters + the anthology I want to release would *kill* me. Perhaps I should try to wait until I have the rough draft of book two or something, though...? *ponders*)
Other things to consider are the speed you realistically (and without cutting quality) are able to write, revise, edit, send to betas, revise and / or edit again, proof, etc. as necessary. I started writing
Sealer's Promise in May 2011. I finished the first draft in July 2011. I then waited until March 2012 before pulling it out and thinking I would "edit" it. I ended up re-writing about 70% of the thing and then have turned around and worked on editing minor plot inconsistencies, technical issues, voice, etc. Now, I *have* had real life issues going on this year, but that's beside the point. I am hoping to have it done today (*dances*) and ready for betas, but (not counting the break I took from writing it) getting it here took me 9 1/2 months. I. Write. Slow.
Another thing that might be worthy of consideration is this: What are your goals as an author? Are you after money? Readership? Proving to yourself that you can do this? Holding your book? Trying your hand at running your own business? There are a thousand different reasons you might be here, and you don't have to narrow it down to *only* one. But you should be honest with yourself about what your priorities are and then strive to find out what you need to do to make those goals / dreams a reality. (Or at least have the best possible chance of doing so.) You can also have little goals / milestones that will lead to bigger goals. (Completed a draft of your newest book? Revised another? Got interviewed on someone's blog? Got a review? Made a sale (yes, one.) ) Every little thing can be something, nothing or everything depending on one's perspective. (I recall feeling this way last year as I started my book blog and got it going.)
But I've gotten a tad off topic. In relation to advising you regarding the main topic here, I'm honestly not sure what the best course of action for you is. (Heck, I'm not even 100% certain what is *best* for me. I'll have to try things and find out.) But I wanted to make sure that both sides of this coin got some coverage. Decide what you are most comfortable with.
I wish you the best of luck.