I have a 2011 Denali 3500HD srw and currently tow a cedar creek that weighs about 12,000 dry and a hitch weight of 2389. Truck squats a little but tows just fine. I am looking to move up to a toy hauler but worried about the weight. The one I am looking at weighs about 15-16000 dry and a hitch weight of 3100-3500 lbs. Think my tires are rated at 3600 lbs each. I am planning on getting airbags to level it but aid the weight be ok for my truck? I'm more worried about the hitch weight than anything else.