#1 buy EBC HH pads or if you are on a budget like me, buy the complete sintered metal pad kit from 'sixity' on ebay for ~$45 with free shipping (personally I think they work just as well)
#2 buy at least the 2 front lines , if not also the rear off ebay. Galfer seems like a safe bet, make sure you get copper crush washers either with the line of buy them extra, you will need 11 I belive.
Rip off the old, install the new, bleed the braked with new Dot4 fluid. It's really a dead simple upgrade. If you shop a little you might be able to keep the whole thing under $200 and the difference is incredible. Don't spill brake fluid on anything, trust me!
I also have a CBR1100xx & a VFR800 which use Honda's linked brake system. I had custom lines made for that, 10 pieces per bike, so the busa is dead simple by comparison.