Keep in mind that Arctic Fox "dry weights" are simply a made-up fantastical number. My 2014 AF811 weighs in at 4,200 lbs wet (full tank of water) without generator, A/C, or microwave. A 990 is at least 300 lbs heavier. You're looking at an actual wet weight of no less than 4,600 lbs, and with the aforementioned options and some food and clothes, etc., you could easily hit 5,000 lbs on a 990, especially a new one which is even more massive with its domed ceiling, porcelain toilet, and other residential options.