Looking good.
Depends on what you want noise wise, a full decat is loud, and is a deeper sound. Also give you pops and bangs with occasional flames on over run. Also needs a friendly MOT tester to pass.
Never had a sports cat my self so can't give an opinion on one.
If you want to the decat route Scoobyworlds vortex range is good value for money. Or you can splash out on HKS super dagger or the Blitz Nur spec.
Loads of stuff in between Milltec, Haywood and Scott, Revolution, Scorpion etc.