We have a center island and no access to fridge, bathroom or bedroom. We are weekend warriors and vacationeers so we are not overnighting in Walmart or rest stops. We don't mind rest areas and use them when traveling when needed. We keep a small cooler in truck with drinks and snacks if going more than 4+ hours at a time. No biggie to us to open slides when we need to.
Your BIGGEST buyers remorse will be too much trailer for your Suburban. You are creating a safety issue for your family and others on the road that you have no idea exists until you get on the road. That Burb in winds or being passed by a semi will toss you around. For your familys sake and others please either back out on the TT purchase and go smaller--30' and under 6k lbs loaded or BUY a 3/4 ton truck.
Any V-8 will pull your camper down the road. 1/2 ton V-8's don't have the frame, chassis, suspension to handle the load safely. Do not confuse pulling power with weight and suspension.