Looking good! I think the speed is pretty darn close. Although everything is new and tight and maybe a little more speed would be nice in the long run, you have to keep in mind this is a big machine and more about sheer power than being nimble and quick. Also looks more realistic when moving slower and smooth compared to those machines you see with super fast and jerky motions.
Definitely moving forward on the hydraulics part. With the proper gear reduction on the pump drive hopefully you can kill 2 birds with one stone and get that flow you want and increase run time.
