A fast way to level enhancing and healing is to have a high level Adveturing fellow and cast enhancing and healing spells on them. They act as enemies of equal level as far as casting on them goes.
My fellow is 80 atm and casting cures, protect, shell and other enhancing spells on it brought my under leveled healing 100-300 and enhaning 80-298 fast. Its a good idea to change fellows job to a non magic job so it dont cast protect and shells on its self.
99 blm, 99 thf, 99 rng, 99 whm, 62 drg, 99 pld, 99 bst, 99 war, 99 nin, brd 99 , 99 rdm, 99 smn, 99 pup, 50 drk, 99 blu, 99 sam, 99 mnk, 9 cor, 61 dnc, 99 sch