Hey guys,
Thanks for all the great comments. And it's great to get so much interest. I really appreciate it.
The project sure was fun and the results prove to be beneficial. Customizing the tractor and implements has really made my tractoring a better experience, and made my tractor a "better" tractor. It is unbelievable how a little thing like being able to reposition your implement without having to get off the tractor can be. Sure, you can do it manually like many of us do everyday.(me...used to

) But now I spend more time accomplishing work and less time jumping in and out of the tractor making adjustments. I don't think I've ever gotten it perfect the first time so I'd have to do it several times.
You eliminate all the stress and strain to adjust those heavy turnbuckles, especially with a bucketful of dirt. And there have been plenty of times I really needed to make an adjustment but said "screw it" because I didn't want to hassle with it. Once I get used to adjusting the valve and pick the right speed, there's no excuse now for a perfect job.
One more thing brought up by ovrszd about using the cylinders like a grader does. There was a reason I chose those big cylinders with the Ø1-3/4" shafts and 8" stroke over the normal smaller ones with 4" stroke. I can position the upper lift arms on their splines so that the boxblade can be below ground level with cylinders fully extended and the upper arms all the way in the "up" position. I would have to rely on retracting the cylinders to lift it up. Then I'd have that "down force" that's missing when needed.

That could be useful in some applications. My 55hp Kama is pretty big and with FEL, Hydraulic boxblade and 4 loaded tires it has to be pushing 7,000lbs.
I haven't set it that way because I need to check if it will work for my other implements. But if the cylinder stroke allows me enough vertical clearance, I'll do that...maybe for only an inch or two so as not to put too much stress on the 3pt casing. I know it can take it because I've bottomed out the boxblade many times with it raised up going over dips and gulleys and gotten an immediate box full. With the cylinders either completely or partially retracted, the 3pt would still be able to float down and I could still use the draft and position control, like normal use.