John
We are doing a group build of 23 rigs, many more behind you.
Check out 2 versions of nd6t agc, to cure that.
Yes cw via one arduino pin, you can get used to it. I may try w0eb firmware and hardware solution someday.
Dynamic mic, using a single transistor stage, solutions are out there on the web, and a very recent qst.?
I suggest using the stock firmware, then reading about 2 nice alternatives,? not in a hurry to decide.
Our club is using the fix with an extra 45mhz xtal and a daughter board with relays to cure the spurs.
Enjoy your ubitx ride while you sort it all out.
Curt
Central MD