OP
I admire your welding skills. I have no idea how you are doing this, or what I'm looking at in the pictures, which means I'll be very happy to see more pictures of your progress!!!
I have thought about that but I’m already getting close to my lifting capacity, which is 3k at the back of the forks. I’ve also thought about building a dirt ramp. Both of these would probably work but ....You have a decent sized tractor so why not add a gin pole to your bucket or pallet forks? I have a sixteen foot long sled mounted to the front of my Kioti which is about the same size as your Kubota and I can barely make it wiggle hanging my fat butt off of the front of it. A 10 or 20 foot long gin pole should lift anything you have high enough and will only take a little bit of steel to make.