TSO,
I just did a little over 10 acres of what you are doing and chisel plowed in the direction of the tracks followed by a disc with drag harrow at a 45 degree angle and it worked great.
You can get it done with a disc alone but depending on the wetness/hardness of the soil you might have to make lots of trips.
I spent months looking for a used chisel plow and transport disc and ended up buying new. I have an 8'6" Athen's disc that I can pull behind my pickup for road trips. But I think it would be a little much for your tractor.
I would Round-Up all you wanted to do a couple weeks before hand and go at it with the biggest disk your tractor could handle.
Or you could always get a bigger tractor so you could pull the big toys! You know you want to.....
Dave
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