We used to pull our 6 bottom plow with a 700 Versatile. We think it is rated at about 170-180 hp and our soil is fairly heavy clay so I think in sandy soil, 350 hp should pull a 10 bottom no problem. I may be wrong
Your Versatile should handle 10-18"s pretty well. Ten bottoms are used (too often) around here behind various brands of four wheel drive tractors on some very steep hills without problems.