You seem to going for everything no matter what the cost is, so if I was to do the same this is where I would start:
Performance upgrades/ Turbo/ Intercooler/ Brakes/ Exhaust
Alive Tuning - Real Land Rover Performance for TDi, TD4, TD5, TD6, TDV6, TDV8, TDCi, Puma
Chassis
Richards Chassis...