I would suggest just using the Nashville Numbers system
In my band we have ME on acoustic tuned down half step and using a capo and the keyboard guy transposing songs a lot plus the electric player also using the effect that he can lower tuning and raise it digitally. So we just use NUMBERS SYSTEM to communicate. I say 5 chord and everyone gets it. But in your case I would just do as others said ... Set the KEY then set the CAPO fret number and just use the shape names.