As far as "my HoT are not working in shapeshift" -- you can't cast them in feral forms, but if you cast one and pop into feral form it still ticks for ya. So for tough fights you can pop a regrowth on yourself, go into form, then fight...the HoT will offset incoming damage for the first part of the fight.
Your spec looks EXTREMELY gimped both ways to me. Unnecessarily, too. There's too many fantastic talents in the feral tree to gimp yourself there to be a better healer than you need to be. Like Mattimer said you can heal effectively for a LONG time even spec'd fully feral if you just collect a 'healing set.' I'm level 70 with just the 11 resto points that don't benefit healing, (furor, naturalist, omen of clarity) and I still very effectively heal parties through 5-man group quests and instances that are at or just below my level. Not heroics or anything, but that's what true healers are for.
For as long as you need to worry about, that'll just mean a lot of +int to boost your mana pool. Then at higher levels there'll be +healing gear to consider.
I'm fully feral and don't know the resto tree well, but the two that I most wish I had you are missing: Nature's Focus and Nature's Swiftness. If you do want to do a feral/resto hybrid spec, which I wouldn't personally recommend, check the recommended "versatility build" in the sticky...http://www.wowhead.com/?talent=MZxMGsfbkxZVEczcq0bo