If your mind is set on building; then FFR is a good kit to build. You will have some nice choices From FFR. Dave smith told me last month that FFR will be offering the
New Slabside &
FIA AC Cobra versions next June 2014 as well as the present MKIV. so you'll have a complete range of roadsters to choose from. But you might also think about buying an AC from the "Club Cobra"
for sale section. You will be driving a lot faster & can make as many mods as you wish once you find/buy what you like. It's just another option to think on.
Alot really depends on your budgit!
Welcome to the ADDICTION 
There is NO CURE! 