Hero UTG(900) with AhJh9d7d 

Recreational Reg Early Pos(500)

Fish Mid pos (200)

Hero Raise 7.5(I know this hand is a fold UTG... felt like this was just bad by me but they have ONLY seen me show AAxx so far and I wanted to play something else to mix it up a little.)

Recreational reg raises to 20 

Fish + 3 other calls

Hero Calls(I got a really good price here...)

Flop KhTd5h(Pot 125)

Hero X, Recreational reg bets POT, Fish Calls 125 rest folds Hero? Yeah I know again that this is a hand that I should not have played in the first place but here I am... The flop is quite nice so whats the best way to play it. Just X/Jamming? At that time I was quite sure he had something like KK/TTxx so he wont fold at all. The pot is quite juicy and some money are left to play for. Should I just call and give upp on KT5+total blanks?

Or its a huge mistake when I cover them both? For some reason I decided just to call his raise hoping a good turn would come or just X/F since I dont expect I have ANY FE.  I dont know what the fish can have but he can quite easy have blocker to my draws and I am behind more then I think against sets? 

Anyway how would you have played my spot?(Dont say fold pre I got that myself :P) I think it can come upp quite often in similiar situations?