We're looking to do the same Roger, but staying away from the GC is a challenge, as I don't have any seeds, or plants..:0(
I reckon it's a good idea, so go for it, as all they really need is a medium to grow in, plus some feed and of course water, so they'll need a tray underneath!
I'm rather hoping that the plants we had last year might have self-seeded, so I can get some going soon...