10/25 6max set i play bad and have a river decision

[EC10]

villain is arbian night. dont know much about his game. he hasnt been active at all in the 20-30ish hands hes been at the table. is the flop check ok? what shall i do on the river? i dont have exact HH but it just happened so its clear in my mind.

6 handed, arbian raises utg+1 to 85, i pot it on the button to 280 or 290, he calls

flop Q-J-3 rainbow

check, i check

turn A still rainbow

he checks, i bet 400 into 530ish pot, he calls

turn K pot: 1230

he checks, and has 1600 left behind