To me, Rainforest and Planet Hollywood are chains and not Disney exclusive, so I wouldn't waste time on those... we have both here (Dallas) and other places. JMHO. Those are never on my list of places to go... if you're restricted to how many you can do, I would stick to places you can ONLY eat at WDW, just in case you're someplace else traveling and can eat those other chains later. But I understand some people really look forward to them... btw- I'm not impressed by either, which helps me mark them off my list LOL.
You can always go have dessert and drinks late one night at Planet Hollywood when you're down at PI or DTD and still get the experience without the expense of their food. Same with Rainforest.
Ohana's would be a great one! We are going in May, and I've read on here how wonderful it is.
I also LOVED Marakesh in Morroco, the atmosphere is relaxed and wonderful, the food is soooooo good and unique, and there is a band and bellydancer!
I've also heard how wonderful California Grill and Spoodles are, I'm sure you'll be thrilled with those! I haven't gotten to eat at either yet =(
Chef Mickeys is a great character breakfast. I also LOVE 1900 Park Faire breakfast but I'm a Mary Poppins nut.
HAVE A BLAST AND CONGRATS!!!!!!!