Wow thats alot of new goodies! BUT alot of work to get it setup right,...like reading spark plugs,...the tire wear can tell you if something is really out, so get a good alignment shop to help you and log the changes.
Since we drive our Golf at the track, I say we as my Son takes it out to Toronto MotorSport Park every chance he got before we left for SC ... without me I may add,...well it's really his car.
I should be running alot of those upgrades BUT we don't spend money on upgrades, we just replace what wears out/breaks, some times with upgrade parts as in the case of the Front Control Arm Bushings but mostly with VW parts. I believe running skinny 205s (albeit Pilot Sports) actually help with the wear and tear on the bushings as the car slides around on track, we manage the slip angles and by been smooth and with the cars cars setup/alignment. We used to find the ESC or whatever its called to be a pain but found that if manage the slip angles and drove smooth right up to the point just before it interviews that you can use it as a good driving tool to go faster, but once it comes on it slows you down, its like a slap on the wrist.
The only thing we keep having to do (and I don't mention it here as we do it often) is we tighten/replace the subframe bolts. The subframe kit from Tyrol from a few years ago only lasted a short while for us, and I'm not about to buy it again.
I guess we like driving more than the mechanics, if it ain't broke,... .
PS. Since we got to Hilton Head we haven't been able to get on at the Roebling Road Track, no Porsche or BMW days. Motorcycle guys has some days booked, only glimmer of hope Robin Liddell has this Wednesday booked, I know him from Daytona so trying to contact him, maybe we can get on.