Definitely Dynon and with a backup battery . Maybe Skyview. ASI, Altimeter, compass and Microair or whatever VHF and transponder. Probably a x96 Garmin as well, and I will probably have an Ipad with moving map by then. I always have a hand held vhf as well. Not sure about a dedicated EPIRB as I have a plb.
Only apparent issue at this stage is that fuel gauges are "either or" - duplicate steam gauges would need duplicate transducers from what I've read. However Dynon manuals state its acceptable to have the unit booted up and engine start, meaning it would be on a separate CB and wouldn't be connected to the avionics bus.
I need to do some failure mode effect analysis.
Glass of red, mmmmm