Keep in mind, if the inside d-rings are mounted on the side you will loose another 1-1.5". Maybe delete them or make sure they are mounted on the floor. I don't like them there, they are a material catch all. They are mostly useless anyway with a large vehicle, you can't get to them. With my Bobcat articulated loader I tie to the ROPS and outside the bed. Is it possible to narrow your tractor some?
I know you didn't ask, but I recommend torsion axles. Night and day towing v/s spring equalizer axles. They also have twice the warrantee. 10 years torsion and 5 years spring. Do your home work, bed gauge, tail gate/door design, hoist type/lift capacity, tool box size, jacks and frame style/size/pounds per foot strength. How is the gooseneck risers attached to the main frame? My 16' Load Trail and Lamar both will flex there slightly, it will give you a rough ride under certain road /load conditions. My 16' PJ does not do that, they did their home work at that location. What capacity/size do you need? Keep us posted on what you go with.