If the intentions of the poster are to dress up his gravel driveway from time to time then the Frontier LP1196 landplane should do the job. This is much easier for a novice to use and will give good results fast. With two angled 8' grader blades you can pull up material from the edges to maintain the crown. The skids will do the brunt of the work keeping it running true so it is an easy tool to use.
Steve
One major consideration in my book on the boxblade - get a welded top, NOT a bolted one. It is not if but when it will shift and you will want to weld it up anyway. Floating tailgate is nice. Hydraulic sacrificers drives the price up in a hurry. I bought a new frontier last year, I will have to look up the model number.
FWIW, I have a Frontier BB1284 boxblade with hydraulic scarifier teeth and top and tilt hitch. Bought this to use with the 110 tlb but now use it behind my 4520 cab tractor and this is working out very well.
Steve