I'm having a hard time with my ADR's, fitting everything in too! I did mine at the beginning of the month, and I keep thinking of more I want to add, and I just can't fit them in!
For your arrival day, I'd go with Planet Hollywood. I admit, I'm not a huge fan-the food is good, but it's so LOUD in there! I couldn't concentrate!

But I think eating an early dinner and then having time to hang out and shop in DTD is a great idea!
For Day 4 Breakfast, I think both places sound good, but I think I'd go with the Grand Floridian Cafe, since I know how much you love that Full House episode!

And you get to sleep in a little
For lunch, I'd probably just use a counter service credit instead of Rainforest Cafe. I love RFC too, but there are a lot of great CS places you can go, and you will be able to use a DDP credit! You can always do Earl of Sandwich or WPE if you're going to be at DTD again!
And dinner, I'd definitely do 'Ohana this day! You have to do 'Ohana if it's your favorite Disney food!
For your last day, I would do either Garden Grill or just do a CS again for dinner. I've never done Garden Grill, but it sounds like fun! And if you do a CS, there are SO many amazing places to go in Epcot! And you will spend less time eating and have more time for rides!
Can't wait to see what you end up with!