Rabbit hutch should be fine but would be handy to extend it so they had a decent size run aswel mate.
keeping it indoors in a shed is ok, keeps them out of bad weather however make sure it has windows/door open in daytime, dont leave them in total darkness.
Handle them as much as poss mate, i can let my ferrets roam free in garden whilst washing cars etc and they dont go far, just gota get them tame and theyl be fine.
Hope this helps