I have to say that I learned my lesson the hard way. When I first started writing I tried the post as you go but my beta readers quickly convinced me that wasn't the way to go. I now basically have volumes 1, 1A, 2 and 3 in the can and I'm working on number 4. I have another draft with one of my betas for evaluation.
With what I am doing all of the volumes are interrelated and I found that something I added to Volume 3 made it necessary to rewrite number 1, and so it goes.
The beta process, I personally feel, is the way to go and have everything ready before you start to post. right now I have about 25 more weeks of 2 chapters a week of postings lined up. That should give me time to complete vol. 4 and get it through the beta process in time to move to it from vol. 3. That should also give me time to work on the next volume and it might be ready when 4 is finished posting.
Just my 2 cents worth. I have found that this way is best for me but, everybody is different.
