Proline has KC -3.5 when "normal" betting sites have them at -4.5. You only get +180 but still, might be a +EV bet, not sure. I figure it looks pretty good, am I missing anything? Not that I care too much, just curious, I just bet a few bucks on it just to make the game more interesting to watch and I also like KC in this one anyway.
I like all your picks, I've never bet a parlay in my life but I think I just might do so right now just for even more fun. I know dick about the NFL though so take it FWIW LOL.
Edit - I agree with Jojalu about Buffalo/weather so I like BUF to win, but not to cover. But I bet the other 5 games on a parlay so go CLE/KC/DAL/LA/PHI!
And most of all, go BUF!!