That's a good point about the downside of a bump. The driveway is pretty steep at some points. And thinking about it more I realized that's also what my father used to do, create some mini lateral ditches, not bumps as I mentioned earlier.
Out of curiosity I called my contactor and to just grade (they have a full sized road grader) and compact the drive they figured a half day and $1,250. Well ok... that would seem more than enough reason to consider the do-it-yourself route it seems.
Given all the input from folks here with experience on the different options I'm leaning toward the "EA 6 Way Deluxe Scrape Blade for Compact Tractors with 25-50 HP V2.0"
One of the big advantages going this route would be the ability to use it for snow as well. Our "little" JD 748 diesel with plow does a great job and I've used that for years but given it's only a 48" blade with only hydraulic adjustments for left/right, up/down, it does have a downside. One of biggest pain is something that anybody that plows snow has to deal with-- that wet heavy snow on top of wet, thawed out ground. Some of the plow guys around here really tear things up with those kinds of conditions.
My thinking is not only would this kind of blade be faster, but pulling a blade would be less destructive than pushing. Even turning it around 180 degrees and angling it seems like it would work as an option as well. But those are just my guesses not having used one of these things.