I also like to go with 3 qbs at the beginning of the year even though I only start 1. You can hold on to that 3rd qb to make sure that your top 2 are who you want and are producing this year. Then you can drop that 3rd qb later on, or possibly trade him if he's good enough.
I like your starting RB's a lot, past your starting 2 Im not sold on Bush or Mcgahee.
WR's have a lot of upside, just have to wait and see if they produce.
Good TE in finley, not 100% sure on ATL defense, but will wait and see.