Work and play fifth wheel 44rls has a 20 foot garage but may be out of your weight range. The Work and play bumper pull 30fla has a 17 foot cargo area which I think would be in your weight range..
You may have too many toys for a toy hauler and a motorhome rated to pull a 10k plus trailer may be the way to go..
2017 Coleman 300tq by Dutchman Toy Hauler. 34.5 feet long and under 10k Gross. 500 watt Solar 2000 watt Inverter, 1999 Ford F250 2WD 7.3 4R100 DP Tuner, S&B Cold Air Intake, Gauges, 6.0 Trans Cooler, Air Bags.