Yes typical smaller mid drives uses hi rpm motors typically up to 10.000 RPM and gets their torque from the gearing to the rear wheel.
There are mid drives in the 2-4000 RPM too.
I think ie the QS 205 got close to 1300 RPM @72v in 3T-. And that is a torque banger even mounted in a hub. So for the torque I think no worries at all. From memory the QS 205 has a max torque of around 100-150 n.m, so 2-3 times that torque should be possible with large rear sprocket. 200-300 n.m is a lot. Of course that will only be peak for very short burst at take off or steep climb.
I haven't done any math for this motor/frame combo but you should probably get more torque on the rear wheel then with any other motor commonly used for e-bikes.
Possible top speed might suffer but for that I need to calculate. Also a field weakening controller will help. If still not satisfied gear down and volt up. And go with a 19" rear wheel.
Edit: It seems QS 205 got 182 n.m of torque. https://endless-sphere.com/forums/viewt ... e#p1291998