I jsut bought my mini Z and having a blast cutting my yard. my question is the blades that come with the mini, are they good enough to cut my yard with grass and weeds? my house has 7 acres to cut, about 2-3 acres of grass around the house that is normally cut every other week, but i have prairie grass and weeds that grow 3-4 feet tall that i cut every month or so, what is the difference in the gator blades that you guys talk about and how much are they. Also what about the double blades? what would be more suitable for what I'm doing, or what do you guys recommend on what blades i should use.