5th wheel for Tundra

I own a 2007 Tundra with a towing capacity of 10,300 lbs. Currently, I own a bumper pull travel trailer (2016 rockwood mini lite 2506s) that weighs in at 5,100lbs. The wife has us looking at fifth wheels and asking what I can go up to in weight. My rule before was 7,000lbs, but now that it's a fifth wheel, I'm wondering if I can go a little higher, comfortably. I know to factor in tongue weight and cargo weight, I would add air bags just to keep everything level. Models we are looking at are: Jayco Eagle 25.5REOK and KZ Sportsmen 262RLK. I have been told by a couple people I know who own half ton pickups and went from a bumper pull to a fifth wheel that say they pull way better, even if they are heavier and that they get better gas milage. I do plan on a 1600 mile trip this summer and I tow for a living, I drive a semi, for what that's worth. Would I be safe and would this fifth wheel tow better than the bumper pull?

Also, does anyone else have any camper suggestions? We are looking for a walk around queen, couch and dinette, decent sized bathroom, black tank flush, and we need an outdoor kitchen. The outdoor kitchen seems to be the kicker for this segment of campers.