Hello!
Signed up here to use the wealth of info there seems to be on the site.
I've owned my mk5 for about a year:
It's a weird stage 2/2+ mix with a TBE, intake, S3 Intercooler with a Forge 'Twintercooler' amongst other things. Just needs a HPFP for stage 2+ I guess! Mapped by GRM in Northampton (which is actually a really nice map).
It's incidentally my third Golf, having owned a mk4 and mk3. This is my daily driver and I've got two other cars for track/weekends.