It makes sense to me. The single axle would be close to maxed out but by putting in 2 the capacity would skyrocket. I personally would not count the awning but the water would take a good chunk of the weight. Do you have extra payload in your TV.
ME '63, DW 64, (DS 89 tents on his own, DD 92 not so much), DS 95
2013 Premier Bullet 31 BHPR 2014 F350 Crew Cab 6.2L 3.73