nice work. it hasnt took you long to catch up with Claymore. (need a thumbs up emoji)
How far do you think you can think you can push the RX cards? Do you have a dev fee included in your miner or are you just going on donations?
I haven't done exact calculations yet, but I should be able to get 250-300 sol/s with RX 480 and a GCN assembler. I wouldn't implement a dev fee as (1) I think cryptomining should be more egalitarian and equalizing in terms of the distribution of wealth and power, in line with the original intent of Satoshi Nakamoto, and (2) I personally think it is really lame.
If you get that much speed I'll donate the speed increase for a few months, thanks for making this open source!