suggest you get the brembo caliper first
I was just going to say the same thing.
and get a first class steel braided (or Kevlar or CF) line.
A radial pump is a waste of money, in particular as there aren't any in a reasonable price small enuf for a single rotor. The one in the link looks to me to be a (chinese?) copy of an early Brembo. I would not touch it if I were you. In my racer, I did use a billet radial pump and billet caliper, but racing is a different catagory. I seriously doubt that you are looking to spend 800 or 900$ (for both items). Anything for much less is not up to much and potentially dangerous.
Look for a PS 13 and an adjustable lever to go with it. Both can be had new from Brembo or used, for instance from a Mito or a TZR or...
Then there are several aftermarket levers to fit the Brembo pump. for instance this one from ABM:
http://www.ab-m.de/en/products/syntoand there is wire clutch lever to go with it.
Magura does offer an hydraulic conversion kit for wire-pull clutches
http://www.btosports.com/p/MGHCYou are beter off getting a really good clutch lever assembly, tho.
Accossato or Domino for instance. Go here
http://www.redracingparts.com/en/english.htmand click on the left on wire clutch controls. I use the one at the bottom.
or this from Accossato:
http://www.agmoto.it/dettagli.asp?sid=80534349420090622140249&idp=260&categoria=the bee's knees but plenty expensive, too.
there are several more brands used in racing, all very expension.