As far as I know the CAA do not discriminate between permissions for N or EU reg homebuilts, however given the short period they are permitted to stay it is a bit academic.
The advice of waiting until you get here to see it that is still what you want is pretty good. I'm just back from Canada the the different in predictability of the weather and the areas it covers is pretty stunning. When I described flying 50 miles and being subject to totally different conditions they thought I was joking. Equally when they said 'the ceiling should be fine at about 1400 hrs and then be go for x days' - and it was - I was staggered. Oh that the British Isles would be like that.....