In all honesty no kit will be fairly straight forward, I believe any project like this will hold many suprises. However if you really want one it can be done!
It takes more time than what you think it will and possibly more $$'s too... but don't be turned off by what I have not sugar coated, because building one is a fantastic experience and it will pay off
Mine is not licenced yet, but is drivable and is great fun to drive!!!!!!
Not sure which kit would be best for you as I have built mine in a different way, however they all have their pros & cons, but I will suggest that you find your closest COBRA club in your state, just so you can have a good talk with the members about their brand cars, and have a look at them too so you can make up your mind
Good luck
SIMMO