I think this is the setup I am going to go with for a couple reasons. The first, I'm going to have hydro assist on it also, so I shouldn't have an issue with turning power. The second, right now I have a D44 and plan to move to a D60 as soon as I can get the money (probably after college graduation next May), so I don't want to spend a bunch of money on getting a flattop, having it drilled and tapped, and then getting steering arms.
One thing that many people don't realize is that mechanical steering and hydraulic steering DO NOT mix.
The mechanical (crossover, push/pull, whatever) steering is affected by suspension travel, hydraulic steering is not. Even with crossover, your effective draglink length changes as the suspension travels, just to a much lesser degree than the super short stock draglink.
Hydro assist and crossover work pretty well because the draglink is long enough that this difference is relatively minimal, any binding that would occur can be taken up by the springs/bushings. I run crossover and hydro assist and its works just fine.
Now, when you use a shorter draglink with hydro assist you can run into trouble. I remember way back when I had a 4" BDS lift on my Blazer and just a raised steering arm. If the drivers side was at full droop I could have the steering wheel cranked all the way to the left and the tires would be straight.
In this situation, imagine hydro assist being hooked up. The box is already at lock, full crank left, wheels are still pointed forward because of the short stock draglink. The ram, however, has no regard for where the tires are pointed. Its going to try to force the axle to steer full crank left, but the mechanical system is going to prevent that. Which means the bushings/springs are going to compress/twist until something else gives, which will probably be the steering box or frame. You would be practically adding a ram, which can apply several thousand pounds of force, so that it can rip the steering box from the frame.
Anyway, moral of the story, mechanical steering with hydro assist is best off with the longest draglink possible. If you can't spring for real crossover IMO you're best off waiting on hydro assist unless your suspension has very little flex.