Proposition bet based on a hold 'em situation

[shaniac]

A poker acquaintance and I were considering making the following bet involving a hold 'em flop and 50 random turn/river cards.

The flop will come down 7s9dJs and he will give me 10-8o (no spades), in other words the flopped nuts. He will pick one hand to play for 50 turn and river plays and wants me to lay %30 on his action or, in other words, $130 to $100.

Let's say he picks his best possible drawing hand--I'm guessing he would pick KsQs or any set--who would be getting the better end of this arrangement?

The winner would be determined by whichever hand wins the majority of the 50 hands.

shaniac