Well I think it's usually i bit dicey whenever you play vs an early Limp-call and the flop is something like 23x, 45x, 34x. Most villains will be heavily weighted towards small pocket pairs I think, especially the bad-reg type of guy. Your loose passive villain will most likely have a much wider range including a lot of suited connectors but still a lot of small pocket pairs as well as small to medium As. So from an exploitative standpoint I would advocate to check a lot on this board especially with Ax because the good news is, since he is loose-passive he'll most likely never start bluffind the turn with something like T9.

i think i could actually size down a bit on the flop, c-betting more like 1/3 or 40%, soley for purpose of collecting dead money/thin valueing worse Ax, and have the ability to barrel alot of spade, J+ turns. given the board texture, i can also choose to balance if i want to with this sizing

Think about whether you want to play 3 streets of betting or 2 streets when you bet the flop and size up or down accordingly. Having 1.3 x (ish) pot left on the turn probably isn't ideal.

I agree. Not a big fan of the flop c-bet size with those stacks. But I don't think sizing up is a good option in this scenario as he will be easily folding(correctly) all broadway cards and worse Ax and only continuing with Hands he will most likely not give up on most turns either. So if c-bet - I would prefer something like $10. On this specific turn card I think you should then check behind and realize you EQ, because it's overall not a good card for your range.

i don't expect he'd fold provided that type of turn card came out.so x/b is fine.ofcourse it's great spot to multi br against regular however villian seems rec.player and he will never fold his made hand like 44.55.and 8x as well