You're gonna put your eye out!
Seriously, that may be a nice engineering project, and if that's the main goal here, then that's great and ignore the rest of what I'm about to post.
A lot of brewers use that design or something similar, but what I see there is overly complicated, difficult to keep clean, and very expensive. Or will this be another example of "Opie-economics"?
You could eliminate most of those valves by using another pump, or just make an assortment of different length hoses with quick disconnects and use one pump for everything.
And the stand definitely needs more triangulation

I considered that design because it seems like something I could fabricate myself, but I just don't have the floor space. I'll be doing something like this...
but at least a couple feet shorter, using a pump to transfer the wort to the fermenters. I don't enjoy challenging my sense of balance on a ladder after several homebrews. If fact, the gadget wanker who built this one is considering cutting it down since he now uses a pump.
If I can't figure an easy way to keep the casters from lifting it too much, I'll probably just use one of these
http://www.rockler.com/product.cfm?page=2383.
And if the goal is just to make good beer, this is all you need...
I do look forward to having the process control that all-grain allows, though.
:cheers:
One more pic, just for fun
