Turbo is fine you need more boost and uprated injectors to supply the fuel, I.E Bosch 403 (Greys) or Siemens 55LB and obviously a remap or a remapped chip to suit.

The radiator and that doesn't do anything to the power.

The bottom end will easily cope with 500BHP+, the exception to this would be if you still had the 205 block which can be a bit of a lottery with this sort of power but you have the stronger 200 block and so that is fine.

Martin