Before I start making official poses, I want to know what kind of instruments should be in it

I'm gonna use some of the basic instruments you'd find in a pop band.

If someone says choir, I'm gonna have TONS of people on stage lol I'll most likely have to think about it since there will be a few things to think about like what kind of singers and such.

I'll also do another one for certain instruments I already have in mind.

First band:
Singer/Acoustic (Rhythm) guitar: Me  alextheflamewolf
Back up singers (max 2):
Electric guitar:
Bass Guitar:
Drums:
(Anymore instruments?)

Second band:
Pianist 1: Me  alextheflamewolf
Pianist 2:
Violin 1:
Violin 2:
Viola:
Cello:
(Double) Bass:

All these poses will be worked on and made into YCH's (except for the ones I'm in). BEHOLD THE YCH PROJECT!!

Also, how much should I charge for the poses? I'm new to YCH's so should they be auctioned? First come first serve? Contest?