feeling really dumb here - how do I solo-mine this with a few racks of RX480's?  
  
I have the windows wallet synced on my windows computer    
I built the linux sumokoin commandline tools on my linux computer
(I have the same wallet loaded on both windows and linux)
I have the node running and synced on linux
I have the RPC listening on linux

However,
fireice_uk xmr-stak-amd only supports stratum pools , and not the daemon API

so... I built monero-stratum from github, set the upstream to be the sumokoin RPC server:port

However,

this is what I get:
2017/09/07 23:13:07 Loading config: /home/pcchip/Downloads/monero-stratum/config.example.json
2017/09/07 23:13:07 Running with 2 threads
2017/09/07 23:13:07 Upstream: Main => http://192.168.1.88:12011/json_rpc
2017/09/07 23:13:07 Default upstream: Main => http://192.168.1.88:12011/json_rpc
2017/09/07 23:13:07 Set block refresh every 1s
2017/09/07 23:13:07 Stratum listening on 0.0.0.0:5555
2017/09/07 23:13:07 Stratum listening on 0.0.0.0:1111
2017/09/07 23:13:07 Stratum listening on 0.0.0.0:3333
2017/09/07 23:13:07 Error while refreshing block template: Method not found
2017/09/07 23:13:08 Error while refreshing block template: Method not found
2017/09/07 23:13:09 Error while refreshing block template: Method not found
2017/09/07 23:13:10 Error while refreshing block template: Method not found
2017/09/07 23:13:11 Error while refreshing block template: Method not found
2017/09/07 23:13:12 Upstream Main didn't pass check: Method not found


Does monero-stratum need to be modified to work with sumokoind ?

Edit: I see the sumokoin pool source listed in the OP, however that looks like a ton of work - I just want to solomine this coin with my RX480's !