Well Roger your idea is good ... but I don't know anything about musical theory ...
Keys, signatures, etc, are things I know but I never learned to use ... so if you tell me we'll play a song in 13/8 I won't know what it is ... and our notes system isn't the same as yours so 'G' or 'F' mean nothing to me ...
The current lineup is:
Yesspaz: bass guitar if he's able to record on his computer
Roger Lee: euphonium
Toby: cello
Moses: guitars and/or bass
Fremder: drums
Myself: guitars
I forgot who plays synths ...
If this lineup is not correct, well you still can correct it