Well I will need to check my notes but I believe the two are, pull the curtain back..
Garmin
GPSMAP® 740 = the Volkswagen – does not support repeater
GPSMAP® 5012 = the Cadillac – supports repeater
Both are chart plotters and would support the rest of the electronics.
We will be sailing the Pacific side of Central America and not doing any long passages.
Probably could get away with Charlie’s Charts and a hand help GPS if we had too

My eyes would like the larger screen; they are 64 years old and getting tired of looking at small print.
My wallet says otherwise.
This is our last boat and we plan on, well lets just say it will be our home forever so we do not mind the investment.
For navigation I do not think the repeater would be an issue. We could use a laptop. No tablet as we will most likely not have WiFi when needed.
We are thinking of an anchoring alarm and possibly wind info at the nav station.