Cool, thx! I have 2 x 290 cards waiting to warm up. I'll tip you some if it works and you post address. I assume GPU-threads should be 2 with 2 cards?
Let me know what hashrate do you get.
I get 14.6 MH/s per GPU with my R9 390s @ 1080/1500
Don't know if thats good or not.