My opinion on the brakes are:- fast blast and they start to fade and should be better,if you have been pottering about,ie quick blasts then time to cool,they are not to bad. I think that if you can afford it,and like Red Robin has mentioned about quality 4pot calipers,do it,but for me,try goodridge or Hel braided hoses,a decent set of fast road pads,and a change to quality Dot 4 brake fluid,you might be suprised and save yourself a few quid.
I travelled over fast roads to Aberdeen for 3 years in a 172 Cup and had the joy of having fun with the Squaddies returning back to Allendale army camp and that car was amazing,then i fitted all 3 mods mentioned as well as Mich Exalto 2's,and swear that car felt like it was on F***ing rails!!!!
Shop around,a few tools needed,and fit yourself,piece of p*ss.
P.s :- make sure you dont put copperslip/antisqueal paste on the meaty side of the pads,like i seen a young mechanic do once,or you will need a new front end!!!!!

Chris.