Car looks great - good idea powder coating the rims!
Dont think the "Mugen" is such a good idea as the FN2 is Euro not Jap! Maybe for an FD2 - yes.
Be wary of the HKS exhaust - It looks like they have copied the original and only increased the diameter. I would look at the exhaust manifold/header first.
I have the KWv3s and they are awsome. I would seriously look at a Quaife
LSD! It makes a huge difference in cornering and virtually removes any understeer.