I think that this is a very intriguing situation. It makes it quite interesting because this player is basically an unknown to you. Anyways, i think that it is not a bad idea at all to see a flop. Then, like you mentioned, you would respect him if you saw an AKQ. But if not, you can probably make a huge score. Going all-in preflop will leave you with no chance to lay down the hand. Which is very usefull, considering that it is likely he has high cards and could flop a pair. Also, he will probably call your all-in preflop, leaving you to race for all that money. Thanks for posting that one, rea