I have no apprehension about putting weight in the front compartment of my Silverback, and in the first year I had it, I carried two Honda 2000s in there.
But I was always a little troubled by the gas fume potential, even though it was largely theoretical. So now my air compressor, spare hoses, BBQ grill, screen enclosure, and other stuff rides there. While it may not be exactly equivalent in weight, those items approach the weight of the Hondas.
And now in my third year of heavy use, I see no distortion of the floor or other signs of stress.
Hope this helps you decide how to proceed.
2019 K-2500 Duramax Crew Cab
2014 Silverback 33RL