I was going to reply the other day recommending a dozer, but resisted since it seemed that you plan on completing the project with your tractor, and I for one enjoy completing a project with my own equipment. But now that the dozer has been mentioned, boxing out a road down 10" by 500' long and probably 12' to 16' is a lot of cutting and dragging material, at least 200 cy +/-. A dozer would be my choice for getting everything cut level, then the FEL and box blade to spread your material. A lot depends on the site conditions and how much time you have. I just put in a driveway around my new garage foundation in heavy clay with my TC-24D. Almost bought a box blade to cut it in, but I don't have anywhere to put the dirt, so I had my excavator dig it out and truck it away before he left, then put down the fabric and spread 100 tons of crusher run with my rear blade. I needed to get it done quick so the builder had places to stage lumber and park equipment. It turned out well and I'm glad I didn't try to move that heavy clay with a bb. If time is a consideration, you might want to get someone in there with a dozer to get things started. Just a thought, either way it will turn out fine with some practice.
Will need pics!
Brad