I agree with the other posters. You may want to do Disney first, especially if you are staying at a disney resort. All of Universal resorts are much nicer than disney. Universals RPR, which they call their value is at the same level as disney's deluxe resorts. Portofino, Universals top resort is much, much nicer than disney's Grand Floridian resort. With the front of the line access that comes with staying at a universal resort, you will definately get worn out with disney's fastpass system and waiting in lines. Portofino has some balconies.
Either way you will have a good trip!