Towing ~8000 with new F150.. fun or scary?

I just upgraded from a 2013 F150 super crew. to a 250. The 150 had plenty of power and pulled great. Where I ran into trouble was coming down the Big Horn Mt range last summer. The engine braking of the v6 was not enough to hold or slow my rig. I was breaking heavy and white knuckling it all the way down. Thought I was going to smoke my brakes. Stopping was my biggest concern. Much more comfortable in the F250. Only pulled it about 45 miles so far but what a difference. Headed to Maine in month. Cant wait to pull it with the new truck.

Side note: My 150 averaged 11.5 mpg from Indiana to Yellowstone and back. Curious the difference in mpg with the F250. We will see soon.