For brake lines you could give Venhill a ring for advice. They're very knowledgeable and helpful.
https://www.venhill.co.uk/
Brembo recommend the RCS15 for a single-disc setup running a four-piston caliper. The m/c kit should come with a pressure switch for the brake light, so that'll be one less thing to buy!
For the disc, I recently fitted a Brembo Serie Oro, which is better spec (and lighter) than stock and a bit below the fully floating race disc.
When shopping around for Brembo parts, try Simon at WSC performance; he gave me a really good deal on my discs and pads.
http://www.ukmonster.co.uk/monster/s...d.php?p=551847