Any of the commercially prepared media will be excellent. The media wont be your first obstacle to overcome however. Main concern will be maintaining a sterile environment. Read up on "orchid flasking" or "orchid propagation via tissue culture" for more information on that. If you feel up to it, give it a shot. It is extremely fun and rewarding, but can get expensive if you dont have access to a university's research lab or something similar.
I cant speak as to when cymbidium pods are ready, hopefully someone else will chime in.
If you decide flasking isnt for you, you can always sell the pod. There are many many eager members (myself included ) always on the prowl for orchid seeds!