you are playing way these way too cute. if you want to lagg it up a bit then you have to be a beast. the problem w/ 1 is that your range going into the river is whatever u 3bet outta the sb preflop vs a button open, so his range is going to justify a hero call by thinking i showed weakness on turn and he can get here with a lot of air etc. If his range is what you think it is, then the best play is to just empty the clip on boards like this on 3 streets.

In 2, i like floating with this hand for sure. But there is no way in fuck he's going to be like well he'd prob check back a lot of his legitimate hands here on turn so im going to call down with 55. This isnt a spot people ever go for a c/r really so you should pretty much be betting your entire range for balance and adjust in the unlikely event that people start taking a bet-c/c-c/c line with AK and own you