A7s multiple questions

[Zapper]

I think that the best possible line would be to bet and fold to a raise. If you were planning on check raising you are building too big of a pot with a hand that isn't that strong, and you can't check raise to isolate because of the position of the aggressor. Consequently, checking and folding is to weak. Therefore, I believe the best line is to bet out and fold to any more action.