There aren't many out there period. You already found mine haha. It's certainly doable. It's not for the faint of heart. Movement and vision are very limited, but it sure looks badass ?
No available "kits" fit bigger guys, but you have that 3d printer so you can size it up to fit you.
Here I am out in the wild with an R2 (currently working on my BT-1 to complete the torture duo).