Bugsy, Ohlins are good, but very expensive.
You can get a full Proflex kit that are adjustable for that. I went for the Drummond 60mm dampers in the end. These are very similar to Proflex/Ohlins. Feature adjustable bump and rebound, 22 settings I think. Messed about with springs a bit (they came with double progressive springs, which weren't really ideal for track use). Got some Eibach motorsport linear items in the end. With HKS pillowball mounts at the front (the rears have adjustable camber anyway) this setup is truly brilliant for both track and road (oh, also have Powerflex bushes allround and Ralliart braces). YOu can do this for £3k, and my guess is that it will be better than the Ohlins. You are more than welcome to come out and try my car - it is a similar weight to yours, so you would get a very good idea.
Drummond are as famous in Australasia as Proflex/Ohlins are here - and are a very good make. A few pro drivers have driven my car, and reckon it is the best handling car they have ever driven. I asked them to drive it so as to make an assessment on what to adjust / change - they said leave it alone, it is perfect. In conjunction with the Dunlop R tyres, it generates unbelievable grip. I set it full hard on the track, full soft on the road - and both are very good. Almost no roll, but just enough compliance to give you good grip.
I think a fixed setup will be a compromise, and rally setup won't necessarily be good for a track. Adjustability for different weather conditions is nice too - setting it softer on certain surfaces, or in the rain, to get more grip.
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