The 3320 is a step up above a 3016. The JD 3032 would be a closer match but thr hydro model is only a 2 range. Can you sell your tractor straight out or on consignment? You have your current tractor a lot of years. I imagine you will keep this one a long time. You should get what you want so you are happy.
Everything is plastic on the 3032 including the floor. I could be wrong but I think a 3032E would get destroyed in the forest. Plus its close to 500lbs lighter than the 3016 (which for me is a step up from the 750) I swear if JD could figure out how to get an engine in plastic and not melt, they'd do it.