I used this motor: https://www.surpluscenter.com/item.asp?item=5-1098&catname=electric
I don't try to start it with a full hopper; just flip the switch and pour it in. With wheat I can only pour in as much as is getting crushed. If it starts loading the hopper the motor will stop.
OK that is the one that should be here for me in a day or 2.
I have 10 in rollers hope I can make it work.
We use a 10" Schmidling mill and I'm very happy with that motor. You just have to know it's limits.
motor mount started
motor mount attached
What are the dimensions of the cabinet you are using?