I would check call. With 4 players in the pot you are unlikely to have the best hand now and if you hit your flush you still want to keep the pot pretty small. If you lead out here you have to call of course but I don't see a good reason to start building a pot yet. 

Imo, preflop is standard.

OTF you have a pretty nice hands, and all options seem viable (donk, c/c, c/r). I think it's better to play it aggressively and either donk/gii, or c/r(if you think someone is likely to bet) for a few reasons:

- you have a J (blocker for top set)

- if you play it aggressively you can force many hands that have very good equity against your hand to fold (because they'll have to fold against the range you're repping). And that's the main benefit, imo, as every time villains fold lots of equity, we gain a lot.

- you're only in bad shape against hands that dominate both your made hand, and your draws, and vs a naked set you are doing OK. 

However, if you think it would be too dangerous to run into a monster and thus make a blunder, I can agree that c/c is better(safer)

This is a spot I would be check/deciding with the intention to check/raise the vast majority of the time. We have a hand that is very strong against most anything (if we're crushed HU at this SPR, that's a cooler imo), but it isn't making enough turn monsters for me wanna lead and get called (potentially in multiple spots) or to get it in multi-way (where our everything could be in bad shape). So yeah, I check here with the intention of jamming over a bet (and a call if necessary). Against a bet and a raise I would fold. If it somehow goes a bet and two calls I would think a little bit, but probably decide I have enough equity + fold equity (looks so strong) that I'd f*** it shove.

don't really like leading. c/c or c/r depends on who is leading\betting and what is action overall. if loose aggressive player leads and someone calls, caller usually has relatively weak range here(naked NFD or FD+pair, wraps without FD), so we could c/r and force at least caller to fold and GII in HU which would be a great result, even vs set (we're 43%) taking into account dead money.

but if some solid reg leads out big I'm more likely just to call as I don't expect anything but set or good draws that dominates us. 

if it goes bet and raise I mostly folding 

id be somewhat cautious 4way with this hand due to reverse implied odds and a mere 3 nut outs. I may be seeing ghosts :(