What time of year are you going? The summer weather is brutal, and I find it takes a lot out of me. I can't cram as much into one day when it's that hot.
Instead of all the CL FP+ days, have you considered a VIP tour? We did the Day of Thrills tour which covered many of the thrill rides (11 total) in several parks. Maybe do a VIP tour and cancel some CL FP+ days? Just a thought...
I would recommend doing the CL FP+ on your DHS day. With the new Toy Story land, you can easily fit in 6 FP+ that are for high demand rides.
I wouldn't do a dessert party on a day when you have a dinner reservation. I'd book a sit down lunch instead, snack around dinner time and then go t to the dessert party.
The room sounds like it fits the bill if you want to watch fireworks from there. It sounds like you will not be in the room much, so is the CL necessary? Will you be able to take advantage of the food/drinks?
You should visit Epcot. You can easily fill a whole day there.
Understand that you will not see everything in one trip. WDW is so much larger than DL it will blow your mind. WDW is the size of Manhattan. We enjoyed DL when we went there but were amazed at how tiny it is.