Re: Medics / Healers, see here!
Cloud is definitely still up for this. Ukitake might be someone who'd volunteer to help in any way he can, although I expect his talents with first aid tend more toward kido spells, which he can't really teach unless someone has Soul Reaper powers.
Kurama's not on the DF, but I expect he's very good with first aid and might be able to teach some applications of natural remedies if that's something you'd like to have available for the class.