Hi Astonboy,
I too have a 996 tt since April this year and use it as my daily driver, sadly not across Europe.
Your's sounds like the ideal build. I will also making some changes to mine over time, although on a smaller budget than yours, but along the same lines.
I'm looking to get the Ohlins suspension which sounds ideal from the reviews I've read so would be really interested in your experience and your initial settings. My fun driving is on the back roads between Peterborough and Derby so it needs to deal with some quite bumpy roads.
I'd also be interested on your views on the SSK, why did you not use the 911 design one? It's a mod I'm looking at so may be interested in yours?
I'd love to see some pictures of yours, do you have a link? I'm new to this forum and haven't learned the tricks for getting around it yet!!
Cheers
Donald