I only have 150 hands on the villain but I know he is a reg and after seeing some zoom highlights/replays  and I think he is kind of meh,  (flatting 5bet with 34s 150bb deep and stuff like that) and from my short sample, he likes to bet a lot post..

55% cbet  60% turn bet.  

Pre I think it's a okay 3bet since reg now days open wayyy too much otb, his btn steal was 70% but his fold to 3bet was 40 so I chose to flat.  

Flop I was kind of lazy and chose a sizing that is to small, should have made >28.  His c-bet was quite big which usually look like strong draw/sets overpair seeking for protection.  usually flat my Kd/Ad here but this guy just seems full of it and just felt like raising him(not really a good point for raising tbh) and he quickly flats..

Turn I have trouble picking a sizing which resulted from my small flop raise,   so I tanked for about 25s and he snap calls.  I think I should have 2 sizing here villain dependent, that is a big sizing for both bluffing and valuing and the other smaller inducing sizing for both bluffing and valuing. 

River is bit meh, not good at those spots.  I can't really bet 80/90 and fold because I don't really expect he is turning his 45 type of hands into bluff(which I'm sure this villain is flatting the turn with)