The seat bracket is now welded in place and the seat bolted into the truck. I just have a bit more metal finishing to do on the tabs to hide my welds and make it all neat and finished looking. I put some cushions on the seat and sat in there and pretended that I was driving for a bit.
I did a bit of testing with some washers and found that for every 4 washers the seat went up, I lost one washers width on the angled kickup at the front. So I figured based on the fact that 4 washers was 1/4", I needed to have 2 washers of space along that slope. Of course this is based on my hoping that carpet and insulation equate to about 1/2".