It's week 10 so playoff speculation will be heating up. But even with that, the 3-4 seed 'what is optimum' discussion is really pushing the edge on the speculation.
With the division looking semi promising (for discussion purposes I assume they will win it), the obvious goal is that ultra important bye (the bye is HUGE despite any argument to the contrary). And as of right not the bye is a 3 team race between the Patriots, Cincy, Indy (with Denver or KC looking likely to claim the other bye). Obviously there are enough games for these assumptions to change but a 3 team race is what this early discussion appears to be as of now.
So the question is how do we get to the bye other than the obvious 'win all remaining games'? I think it comes down to a 6-1 record making it a strong and comfortable likelihood. 5-2 keeps it a better than 50% though one additional favorable result from Indy or Cincy may be needed (the tie break may be in play). Going 4-3 puts it uncomfortably below 60% probably requiring multiple favorable results in week 16 and 17 for the bye to happen (tie break could be a killer here). 3-4 and the bye is 'buh-bye' and drama over the division crown is now in play.
Cincy Schedule: Indy, SD, Cle, Bal, Bal, Pitt, Minn
Patriots schedule: Den, Car, Mia, Cle, Bal, , Buff, Hou
Indy Schedule: KC, Cincy, Tenn, Tenn, Ari, STL, Hou, Jax
As of right now the schedules don't appear to obviously favor or disfavor one team over another, so "schedule" is not an excuse (at least as of right now).