1) 8 is probably perfect

2) Conference Championship games basically half the field, P5 auto bids.  2 best non-champs is enough.

3) Agree top ranked G5

4) No problem with FCS games, money for FCS, almost like practice reps unless the FCS is from MVFC

4b) However, if there is a 12 game schedule, only 10 of those game count toward the ranking, your two weakest wins don't count.  So enjoy those 2 wins against Citadel, Illinois St, or whatever MAC/Sun Belt for the glorified practice.