I know it's no piece of cake but..... Build your own mill. Here's why....

[Wise]

Good approach and good luck man. I used bailer belt myself, it is heavy and durable lil stiff to begin with but it'll be fine, I found a local cabinet maker and he made slats for a decent price.

[MOSES]

Moving up to 10” main wheels will not increase the rotation of the belt, I agree that it’s the easiest solution that comes to mind. However, you might want to reduce the thickness of the slats or the belt to reduce the weight.