I don't think jamming is a huge mistake, that being said you never really get it in with great equity and have near perfect visibility on future streets. Ans: Depends on opponent

So many players lose big pots in situations similar to this one. They just get blinded by their two pairs and nut flush draw, go into autopilot and run into bigger hands because of that. I think that just check/calling is probably the best play!

I think c/c is better than c/r.
But maybe prefrop fold.

idk what is right for pre. I won't call SB here unless there is bad player in pot already.

otf, lets see positives about x\r:
1)we make him fold\make marginal call w\ pair+wrap\comboDraws that we dominate,
2) we make it easier for us to play by x\r, as we create lower SPR and thus taking away positional advantage for btn.

cons:
1) we likely to isolate ourselves vs bigger hand, I don't think 'passive reg' would b\gii here pretty much anything that we're now ahead of.
2) don't let him bluff on future streets when we hit our outs (lets significant here probably)

too many possible texture shifts at future streets, I guess I like x\r. not entirely sure it's best option

c/r vs passive guy from the btn is probably bad, because btn's has many tt jj combos, and he bets into 4way pot.