From what you say about your time constraints you have no business trying to DM as well as juggle all your other commitments. Being a DM requires work, lots of it; no matter if you are trying to run a published adventure or making up one of your own. I go to school and work and have a kid and play D&D, often DMing. When things get too tight, I take a breather from D&D. It isn't fun, but neither is having a DM who doesn't have his you know what together.
I understand some of your complaints but get real. You know what I have done to ease the problem of erratta? I haven't started running the adventure yet! My PCs will start up after the first of the year and I will have all the posts on the messageboards as well as letters to the editor to work with to figure out problems. I personally was amazed at the amount of material outside of Dungeon for this adventure. It has made my preparations that more thorough and complete.
I suggest turning the reins over to someone without so much on his/her plate. Or else buy an RPG for the computer so you can play at your pace and you don't mess w/anyone elses groove.