How much are you planning on towing it over what distances? Personally, I do not think an S10 (or a Trailblazer) is a suitable vehicle for towing anything much bigger than a couple jetskis or a small fishing boat. Their brakes are not that strong and the narrow beam/track can make towing a "wide" trailer a fishy experience.
I would get something like a 7x16 with electric brakes. Be careful about the gate/ramps on landscape trailers, they are really not meant for the weight of a small tractor. You will probably want to upgrade your hitch also, but if you tow very often you will end up wishing for a half-ton truck anyway.