The ONLY reason I see you needing a 1 series, is if you really want a loader. The loader on the x7 series is just gimicky to me, and I'd prefer a AWS to the loader. If I was you, I would map out how much tractor work you really need done vs how much you need to mow your lawn. I see people with 3x20 sized tractors with a just a mid mount mower and all it would really get used for is being a really expensive lawn mower. 1.5 acres is not much land to work on, and a 1026 will definitely tower over it, but will be the most versatile, and when you need the extra capabilities of the 1026r, you will love it, but it just depends on how much you will use the extra vs how much more it is vs an x7. If you can swallow the cost of the 1026, I'd go for it.