12-4 is downright laugahble, even if things break perfect for yuo and the other 3 AFC East teams are ravagewd w/ injuries you will not win 12 games.
The ceiling I would say is 8 maybe 9 games. Looking at your sched:
Denver is a bit overrated but will still be tough for you, you aren't winning in Week 2, Carolina is very difficult, at Buf is a loss, at TB will be a good game, KC will be very tough, at NO will be tough, Atl will be very tough, you will no beat NE, at Cle is winnable, at oak will be difficult, Buf at home will be difficult, at SD is difficult, The Jets at home will be very difficult, and NE again will be a loss. Best case is probably 8, you'll probably be in the 5-8 range.