I start the hand with 10k$,villain in this hand has me covered,Everyone else is sitting with avg 6k.

Villain is a very strong reg,plays very laggy,has a high bluffing frequency.. ..My pc'd image is very tight...

Although villain knows I am capable of making moves..(We hv played a lot of HU in the past)

ep opens to 100$,4 people flat including the sb..i flat K6hh from bb

FLOP: AQ4hhh(600$)

Sb checks,i lead out for 300$.initial raiser & a fish fold...strong reg makes it 950$ with 2 players behind

I flat

TURN:7o(2500$)

I check,villain bets 1800$  action??

What's the best line to extract max value from this hand??