I personally found the comfort kit transformed the handling for me , my driving style and the roads I normally drive on giving me a great confidence boost for 'faster driving' whether on B roads or motorways.
I havnt had the confidence to 'lift a wheel' like the vets do , but believe that a matter of time , acquired skill and opportunity.
My advice is have your front pressures a bit higher than recommended ( I was flexing mine into the mudguards on fast corners at normal pressure ) and wait for the kit.
+1 on the comfort kit - it helps stabilise the car on bumpy roads which leads to more speed more safely.
+ another 1 re the tyre pressures - I've gone up from 22 to 24psi on the fronts and it does seem to reduce the understeer and sharpen up the front end. I'm planning to try 26 psi next.