Given your expertise and budget why not consider something like this?
VANS RV6 0-320 160hp Deltair
engine,TTAFE 400hrs, Sensenich metal prop,
Vetterman exhaust, electric trim, electric flaps,
aileron trim, Garmin GPS, Narco
radio/transponder, permit 06/11 constructed
98, yellow/blue, full set of outdoor covers,
£32,500,
You will be able to do all your own maintenance, and it will do 145kn.
Rod1