[KaiShin]

66/16 is LAGgy but not overly so. 66% VPIP means he's playing approx. 111 out of the 169 starting hands, which is a large range. However, 16% PFR means he's only raising about 18 of those 111 hands, which means his raising standards are pretty normal preflop. Couple that with the fact that he 3-bet you and didn't openraise, and I think your PF cap was ill-advised.

I don't understand what you mean by slow play fom EP. You want to LRR KQs from UTG? That's pretty nuts right there.

The flop play is interesting. I can see merits of both raising and calling. At this point in time, with BB betting into me and having an awesome redraw to beat anyone with 2 pair, I think I like calling with an aggressive player to my left. Hopefully he will raise and I can pull a fun call/3-bet out on the flop.

I like the turn raise.

Your LAG suddenly wakes up when a brick hits the river, based on his passive play throughout the hand, I'd likely just call his river raise.