I'm not going to get into the weights or talking about specific campers.
I would strongly consider a bunk room model, simply for the air conditioning. If I remember correctly, it can get warm in Tampa in the summer. Typical bunks do not have air conditioning blowing directly upon them. If you close the curtains to keep it darker, it can get uncomfortably warm in there. Also, they tend to feel like a coffin.
A bunk room will usually have open bunks and heat and AC registers inside the room, allowing your kids to sleep comfortably. They will usually have a single door or curtain blocking off the room from the rest of the camper, allowing you to keep the room dark for them, but still allowing ventilation.
We looked at the Jayco 28BHBE and really liked it... except no AC vents to the bunks. We ended up going a little bigger and getting the 29QBS and are much happier with the result. We originally did the math and thought we could stay within our ratings on our Tundra... turns out we couldn't and had to upgrade to a heavier truck.
Be very careful with your weights, don't trust a salesman to have your best interest in mind, make sensible decisions and enjoy camping!