I am a button. 100 for SB and 200 for BB.

Preflop.
I 3bet with Kh8s, SB calls.

Flop
5s 7d Qd
Pot 1400.

Opponent checks, Q is in our range, I raise to 800. Opponent calls.

Turn.
5h
Pot 3000.

Opponent calls. I call.

RIVER
8d
Pot 3000

Opponent calls. I call.

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Is this right strategy?
I'd like to know what advanced people would do.