...your F150/TC combo is what it is.
Being over a GVWR isn't a safety thing but being over a semi float rear axle/tire/wheel/spring pack load rating is a very serious safety concern. You didn't say what your trucks rawr is.
What can you do ?
Fleet Ford doesn't show 2010 specs anymore but we know Ford has used 3650...3800...4050...4550...4800 rawr numbers on their F150 trucks. A rawr can be the lessor of a wheel/tire/rear axle assy/rear suspension.
Ford people in the past has said the F150 uses the 9.75"diameter ring gear/34 spline axles in 4000k-4800k rear axles... and a smaller 8.8" ring gear/31 spline axles in smaller axles assys. Ford techs should be able to tell which rear axle is under your truck.
I would suggest upgrading to higher load capacity wheels/tires. If the truck sags too much there are many aftermarket suspension products that help with sagging issues....air bags comes to mind.