BN- likely rec or weaker regular. He is playing 4 tables but flatting 3,2x in BU, and calling sqz after that. Hm not that this is bad, but I guess not great player and we will keep it mind.

Flop pure mix, having 2 nut overcards I tend to bet it, but nothing pure vs strong range(PP/Broadways).
Turn king is great for my range, so I'll keep aggressive strategy, could jam on double draw King, this one is safer.
River - I feel like check call isn't good and maybe he is weak enough to call bunch so shove should outperform check

He has ~ 9 sets (I would guess less if we discount), and around 12-15 flushes. He should also have 99-JJ at high frequency,8x and touch of Kx