Towing question

I have an 2007 f150 4x4 extended cab, 4.6, factory tow package, tow limit 6950. Kit trailer, 4100 dry weight. Do you think it is safe to tow this cross country? I have 55000 on the vehicle.
I have towed the trailer around locally and it does pretty good, except on hills. I do have a stabilizer bar I plan to use on it.
Any thoughts on this?

