I got a six acre lot (-1 soon for a fish pond). The lot is clear, no tree at this time. I plan to do some landscaping, planting, mowing, and grading my driveway. What's the largest tractor I can have without having it so big that it is not useable? I know a reasonable tractor for my land is 20-25hp, but I am a power monger. Bigger is better in my book unless it's not useable.