The hot combination in TC Clubman right now is an HW 120A v2.1 (or V3.1 1S if you're feeling flush, but you won't notice the difference in a GT12) coupled with a Reedy Sonic Mach 2 (must be the Mach 2) with about 40deg static timing and fairly light gearing.
If you're intending to buy new, then the Reedy Mach 2 would be a better bet than the LRP. However, there will be a faster one along in a minute! HTH
