So the game is 5/5 in Blackpool. The night started with this game as 2/2 but with approximately 20k being on the table it was deemed wise to increase the stakes. The villain in the hand is Andreas. My info on him was he was a 5/10, 10/20 PLO player at this moment in time. When I first joined a cash game that night he was sat playing Chinese with Mitch, and had bought in deep, so he was presumed decent. I bought in for 500, so not an obvious i want to play big amount.
Andreas probably sees me as a standard younger guy, not too many hands of note although he could well have seen me make a very thin river bet with AA on J96K2, when the flopped flush draw completed. I was losing earlier on in the night and have topped up since, but fairly sneakily so he may not know I'm in ~1500.
We look down at red aces utg +3, the straddle is on and a recreational player has limped (I'm not 100% sure he is here for shits and giggles but it seems likely) . I make it £50. Andreas flats fairly quickly, and the limper calls.
The flop comes

and it checks to us. We bet 85 and Andreas makes it 215.
Turn

Andreas bets 345 *(maybe 315 again actually) We call.
River

Andreas checks after 10 seconds maybe.
We have ~865 back. Checks or bets?
He hadn't really been in a 3betty mood, I'd 3bet him once and check folded kq7 with the fishhooks. I'd been fairly quiet at the table as it was playing fairly large.