Offroad board. What esc's are good to use and gearing etc.(first build)

I am going to start building my first eboard soon. I need it to be with offroard wheels. What gearing ratio should i use and what esc or vesc.

I have two brand new sensored fvt 12s ESC’s for sale for $90 each.

Normal price is 130+ Each

Perfect for mountain boards for extreme torque