would appreciate some well known guidance to help upgrade my bone stock '97 MKIV auto

[jzzrs180]

Hey hey everyone.

I am purchasing a stock '97 MKIV, I have done my fair share educating myself on BPU's n APU's, and from that have certain goals I want to accomplish, yet still proceed with the proper steps necessary to avoid disaster. The ultimate goal is to achieve the least amount of turbo lag with immediate response, and still feel the power band the whole way. I don't need a crazy 1000hp monster, I'd prefer a smooth street driven 700-800rwhp max/w adjusted suspension, and still keep the originality of the car. Am I missing anything from what I have listed so far?

1ST Bundle
1.ebc or mbc (electronic/manual boost controller)
2.greddy BCC
3.downpipe with high flow catalytic converter
4.exhaust
=From my understanding this will equal to around 370-410rwhp.

2nd Bundle
1.turbo(s) upgraded
2.HKS fmic/piping/water pump/ thermometer
3.adjustable cam gear(s)
4.Paxton upgraded fuel system/w (720 injectors?)

Is it cheaper to upgrade to a single turbo rather than twin, and do I still benefit from a blowoff valve in an auto? Any other recommendations or opinions would be appreciated as well! Like what is unnecessary for upgrading i.e. intake manifold?