I have a steep property in my back yard up to the hilltop as well. I rented a mini-ex a few years ago and got as far as I could while I had it. There were a lot of points where I had to use the bucket to pull myself up hills and I tipped over a few times only to be caught by the bucket itself. The road has held up with only a few run off points, and eventually I will get myself to the top, but need to plan it a little bit before I start up again.
Have you just been using your bucket and the blade and that's it? I will be honest, I haven't read all 24 pages, maybe half.
Either way, looks good, good luck! And be careful on the steep parts!