Bombed for towing or lightly bombed?

I did upgrade suspension (Torklift upper and lower StableLoads and Firestone air bags), wheels (Vision 19.5" rims and 245/70R19.5 tires) and receiver (17K lb Torklift SuperHitch) to haul a 2-ton camper on my 3/4-ton truck while towing a 4-ton enclosed trailer. I was within my GCW by two tons and over GVW by one ton but never had a need for additional braking or power. Monitoring of vitals was through a Scangage II and navigation via a Pioneer AVIC D2.