The LM-Rs are the NICEST looking road wheels (LMs come 2nd). The FIs don't look nearly as good. IMO you should only go with FI if you're going to track the car otherwise there are alot better looking bbs wheels out there such as the LM-R.
The black FIs posted look ugly, overly aggressive for road use (a bit of try-hard feel). Your LM-Rs all the way, but hey it's your dollars.
Supercharging your car would have been the best choice hehe that engine could use some extra torque.