Welcome, but make a plan first. 330 motors can be had for really cheap these days (iirc less than 3 grand) and that's a good option. If you really want the car to wake up get a flywheel first, but keep in mind what parts you want to spend money on if your getting an entirely new motor soon (not 100% if the flywheel will work on a 330 motor).
We did intake/exhaust/ud pullies/reflash on my friends ZHP and it's no rocket but it really gave it that extra oomph it needed. To give you an idea my cousin has a 2000 S4 with downpipes/exhaust, roughly 270hp/285ftlbs and it pulled 2-3 cars 40-120, now it's even with the ZHP having the edge after the bolt on's. Another example, my car went 14.0@99 completely stock on a cold night with shitty tires, after U.D pullies/flywheel/exhaust it went
[email protected]. The trap was not much higher but the added rwtq really showed in the E.T