Sounds like you guys have done your homework and a rearing to go. Sounds like a fun time.
Those books are great for varied method learning.
As you said, you will be practicing alot of the things you have read, and I totally am an advocate of that in the right senario.
However,
30m Isnt enough. Its perfect for a perfect climb, however, 91+ft isnt enough for practicing C-Z-pulley systems, which is the "ideal" system for a 2 person team, and the extra 72+ ft if you are using a 60m rope is a little more security on your back in terms of a kiwi-coil.
A 30m rope will be ok, but wont give you the extra cushion
for playing, security, or being there for others when a rescue is on the plate and you guys are the only ones closest to help.
I even carry a 8.3 50m when I solo.....Just incase.
Sorry to stomp on the horse, but a little more rope will never hurt.