I started towing a 2014 FC25FB solar with a 2013 F150 4wd, max tow, max payload, 3.73 axles and an Andersen hitch. The best I could get that combination to do was 900 lbs. over GVW on the drive axle and 350 light on the steer. I had the trailer weighed at Jackson Center and guess what? The tongue weighed 1252 lbs. with "some" water, empty holding tanks, "some" propane and clothing, food, etc. Total cargo was about 700 lbs. or about 800 lbs. under GVW.
I switched to a Blue Ox with 1500
lb. bars. With zero links showing (which required and unorthodox hitching method that made use of a bottle jack) the drive axle was 150 lbs. over and the steer axle was at unhitched weight--the Blue Ox transferred 350 lbs. to it. This would have been okay but the 400 lbs. that were transferred to the trailer axles resulted in a VERY harsh ride back there, based on the stuff that was "out of place" after towing with this setup.
I gave up--traded the Ford for a GMC 2500 Duramax and went back to the Andersen. The GMC's axles are well within its ratings, the trailer seems happy, and I love the Andersen.
The Blue Ox is certainly "good enough" for your 25FB if you have enough TV capacity or don't ever visit a scale. If your 25FB weighs out like mine you may want 1500