I'd just call the river in #1, I doubt you push a loose passive off a flush enough compared to the times your hand is good anyway. I'd also bet 10-12 on the flop.

#2- looks ok. I bet the flop more again. raising the turn is bad imo. I think you will see KcX, JXc, or a bluff enough of the time there kinda based on his huge turn bet, but it's close since he's passive.

#3- looks good. sucks if btn hit gin on the flop or slowplayed pre, but can't really worry about that. I prefer reraising pre flop to (hopefully) get hu and protect your hand, and get value vs btn. if co had like 2% pfr I'd rather call, but think 7 is wide enough to reraise.