I am building a electric Quad. I have one of those cheap quad frames. I am looking for what size motor i need to move it loaded plus pull a trailer.. In sand and at 30 degree incline on some duns. So lets go with a weight i will never hit 1,000 pounds. The quad has 14.5 inch tall tires. I need to do walking speed and if i can go faster its just a plus.. I was going to use two 24volt 450watt 480rpm geared motors running the same axel witch is 1.190 O.D. Or is that over kill ? can i use one 36volt 600watt geared down motor???