Just get it live mapped rather than a generic chip to suit your engine. 200bhp sounds a little optimistic, but not out of the question. I think the PD/CR 170bhp engine from the golf/audi gets around 205-210bhp from a live map.
I would hope for around 170-180bhp and it still be good to drive. How old is the car? How much power can the standard clutch take?
Molgrips, stage 2 possibly need some exhaust mods, or it could just be a more aggressive map that gets more power, but will possibly affect drivability. Going up the stages you will probably include a dpf/egr delete and going up looking at different exhaust systems and turbo’s etc.