when you say twincharging do you mean using a smaller turbo and a larger turbo or using a supercharger and a large turbo?
To be honest in either case, I'm not sure the effort required would be worth it. you could use something like a k04 or a hybrid and get big power without much lag really. I'm still using a k03 but my aim is to have a car that goes well on track days and doesn't blow up (too much!) rather than chasing numbers.