Completely ignoring how horrible KC has been so far this year, SD is notoriously bad ATS and ML vs division opponents. More than two TD's is worth a shot

I made a killing last year fading SD ML and ATS - 4-2 ATS and 3-3 ML, but in those 3 games I made 3 to 5 times my money.

I might play a bit on the KC ML as well and SD -21.5 or more for insurance. If SD doesn't lose/barely win, they'll blow KC out and I'll collect a good payout on that side if I lose my main bet. There's really no in-between with SD.