Graham,
I agree you do loose some of the feel through your foot but as we get older I find its more easy on my foot I can just feather the brakes . Mike & Ben Duncan fitted mine with a servo and 4 pot (Billet ) in 2009 Ben said the set up was one hell of a lot better than Morgans new stuff at the time and it increased my brakes by about 40% according to Ben . Comes in handy with todays idiots . The only down side apart from feel is that it would be easy to bald patch your tyres if you are silly .
I'm running braided hoses and brake reaction bars (the bars were only fitted trying to mitigate another problem).
A pal of mine has also fitted a servo, but I find they take away some of the feel - OK you don't need the same brake pedal pressure, but to me it loses some feel.
I don't think you'll need the 4-pot calipers unless you're planning to go racing...
Cheers,
