Hi there TonyH, and welcome.
I'd look at getting a price from an internet based site/ discounted broker, and take it in to your local dealership to see if they could match it or at least get close. I personally wouldn't buy an import but some people do with no issues, and only slightly lower resale value. I'd check the warrenty as some imports have been sat around for a long time waiting to be sold. if I can find the thread I'll post it here.
I wouldn't wait for the MK6 GTI, I dont believe its out this year and possibly late next year according to my VW dealership. It didn't stop me nabbing some of the available .co.uk Mk6 domain names though!!