all you may need is a set of braided lines mate,,
with the weight taken off the front wheel by the link you might find that they will make the front lock up with a good squeeze {from past experience}
failing that, any brake set you wanted to mount would be a breeze, place on the disc where it should sit, squeeze the lever and build a new mount bracket,
and if you want to get real clever,, you could make it a parralellagram braking swing arm,