Well, I've FINALLY done it after a year's worth of researching. It's booked in with Rick at Unicorn at the start of the new year for a stage 1 engine + DSG remap.
I decided to go for stage 1 rather than stage 2 as I was concerned that adding a downpipe would ruin the overall refinement by adding extra noise, whether it would or not is another story but it's a risk I'd rather not take + not only that I've read that a downpipe, when added to the CSS exhaust, sounds awful. I'd much rather have ~ 25 bhp less and a drone free interior.
Next up on the list is going to be the Clubsport rear diffuser and the TCR spoiler. Just need a bit of sunshine now to get all the new bits fitted but something tells me we might be in for a bit of a wait...