MAD, sounds good to me to be honest- a resonable price and I bet it will be excellent.

All items spec'd to the car- not a hotch potch of second hand bodgery.

BUT

I'd buy one done- (well I did so there we go) I bet somet like that done could be hand for 8-10k or maybe a bit more as finding one done to that spec and as well as it will be may be hard.

But look at it like this- sell your car- depending on condition and spec you'll get lets say 4k minimum.
Then add 6k to it buy one done and you've just saved 6k straight off and probably quite a wait- and you'll buy somet with most of the bugs ironed out too.
Then say 500 quid on bits and bobs to make it your car- change the guages, change the wheels.. etc.

Jake