Well you are only talking about 4 months or so, and I think you will be fine , maybe take the battery out and on a trickle charger, (one of the 12 dollar solar ones would be ok. And for the tarp, I think the consensus is dont let it touch the ground and hold moisture in. In other words let air flow under the tractor. Also the clutch needs to be pushed in and locked down with the little spring loaded lock provided for that purpose. The idea is so that the clutch does not rust together. Also on the bottom of the tractor is a moisture release fitting. You press upward on it to release any water that has condensed in the bellhousing. Press it when you put it up and when you put it back in service. Depending how muddy the ground will get where you park it, you might want to put something under the tires to keep them up out of the water. Probably not a problem, but you decide. Be sure to lower all implements, and you might put a little Fluid Film or some similar protectant on the exposed hydraulic rods, and anything else that looks like it could rust. Also did you get an owners manual with the tractor?
James K0UA