You might want to post in commish corner for more input as well, as a potential new commish you can get some additional general feedback.
Only do auction if you have a lot of "hardcore" fans, auction is better as you assemble your whole team as you wish with the same equal tools as everyone else rather than being reliant on a draft order but can be tougher for casual folks. A draft is more user friendly to casuals. if you do go auction, itd be fine to have auction for starts and quick draft for bench or auction everyone.
9 hitters, 9 pitchers and a 6-7 person bench I would throw out there. If it's a Draft, draft the whole team.
Check all those sites listed above, if its a simple league go yahoo..more complex check out the other sites
"I'm the man with the ball. I'm the man who can throw it faster than F***. So that's why I'm better than anyone in the world." - Kenny Powers