Am I correct that you'll be a group of 5 adults total? We've done 2 connecting Premium rooms at the CCI -- works very well as a sort of suite -- larger rooms, plenty of sinks, 2 bathrooms (!), 4 queens, 2 small fridges, 2 microwaves, 2 DVD players (free rentals at the front desk), free breakfast delivered to the room (more available in the breakfast room if you want it), free parking, free private shuttle (runs on time), great customer service. The walk is about 8-10 minutes, and you can always use the shuttle when you feel like it. CCI offers various discounts so check to see if you qualify for something.
There are also hotels across from the parks on Harbor that have family suites that might work for you, e.g. DI&S, Park Vue, Del Sol (?), etc. And you could check the Homewood Suites -- close enough to the TS lot for you to take the free shuttles to/from the parks.