Hi.
Preflop: I will 3bet this really often vs someone opening so wide. He folds a lot to 3bets though so I think calling is fine and just make your entire 3bet range air until he adjusts.
Flop: Definitely a call here - KQ is ahead of a 90% range on this low board.
Board: 8s3c3h
Equity Win Tie
MP2 53.61% 51.62% 1.99% { KQs, KQo }
MP3 46.39% 44.40% 1.99% { 22+, A2s+, K2s+, Q2s+, J2s+, T2s+, 92s+, 82s+, 72s+, 62s+, 52s+, 42s+, 32s, A2o+, K2o+, Q2o+, J2o+, T2o+, 93o+, 84o+, 74o+, 64o+, 53o+ }
I really don't see the need to turn KQ into a bluff - It's like Ace high in other situations (like A5 on TT3r vs a 60% opening range for example).
About the River: Very dependent on your image, but you can pot it, or 1.5X pot it. You don't rep much but his range is super weak anyway.
Thanks.