Desert Captain, handye9 and Tucson, I haven't been ignoring the payload issue. My tongue weight when the trailer is fully loaded is 990 when all of the cargo we would be taking is toward the front of the trailer. Evenly distributed and it's 875. The sticker on my truck says my payload capacity is 1486. In my owners manual, it takes into account a full tank of gas but the weight of myself (200 pounds) and my wife (120 pounds) are NOT taken into account. So when I subtract my weight and my wife's, along with the tongue weight, tonneau cover (50lbs-actual weight provided by the manufacturer) and sprayed in bed liner (25 pounds-weight provided by Line-X who sprayed the bed of my truck) and the weight of the undercoating (30 pounds-weight provided by Ziebart) I get the following. 1486-200-120-990-50-25-30=71 pounds left with a worst case scenario. Evenly distributing the weight, and I gain 115 pounds of payload. Not much, I know but at least I'm under the limit. If I don't put anything in the truck and load everything in the trailer as I did when I weighed it, I'm within the limits of my payload capacity.
I ordered another sway bar so I'll have two and I'll have to account for the weight of that, and I will be adjusting the WDH before installing the sway bar and tonight I am going back to the scales to check things again. On the tire issue, I'm waiting to hear from my nephew on a price for tires (He works at a tire place in town).
If after I do what I can and before buying new tires, I have a decision to make. I can do all I can do, buy the tires and be very careful and get the best towing experience my setup will allow, or I can lose about $10,000 by trading my truck in for a new one that better fits my trailer or I can leave the trailer in my yard and not go camping.
On a side note, the only differences in the F150 tow package and the Max tow package is bigger mirrors and 3.73 gears. My truck has 3.55 gears. The Max payload package which I've never seen on any F150 on the lots would have certainly been helpful. I believe that provides for an extra 500 pounds of payload but I could be mistaken on that.