Braided steel brake lines will be the single biggest improvement you can make to the brakes. Fresh quality brake fluid and bleeding is good, as are quality, fairly soft pads. Soft pads bite better and are more gentle on the disc, but don't last as long. Still, it is easy to carry a spare set. Check the disc is true (not bent with high spots as these will push the pads away as the rotor turns). Make sure the brake master cylinder (on the handlebar) doesn't flex as this will absorb some of your hand power.
Hope this helps.
Nigel in NZ
The mouth of a perfectly contented man is filled with .
-- 2200 BC Egyptian inscription