Okay. I can't help you with a chambered exhaust. If you choose to make an open design, I will be able to furnish you with a map that has been tuned to a FAST intake and a straight pipe (the GB exhaust).
It won't be perfect for your bike, but it will be pretty close. I would probably lean out the cells a couple values prior to flashing to your bike to account for your climate being considerably drier and warmer than up here in cloudy Oregon.
For a reasonable fee I could do all of that for you, and just send your ECM back to you ready to go.