I agree it would be good to set them in BTC rather than $, like buwaytress said, but the stakes should be low since there are people used to playing at those poker tours with really cheap tickets ($1 sort of thing). My friend is one of those people who usually play at low-low stakes, but hopefully, he'll join you.
Stakes are complicated matter. It would be best if could have few tables with different stakes but there is not enough of us here to that. If stakes are too low than Texas holdem looses one of the best features - bluff. It is not the same if you are bluffing with little or no stakes or if there is a lot of money on the table. For me ideal stake would 50-100$ but I know that is highly unrealistic so I'll just let you guys agree on everything and join if I find the time.