Are you going full racecar strip? You should lose the windows and electric regulators. Put on plexiglass windows and sliders. Saves a ton of weight!
How much weight are you estimating on shedding off?
Eventually it will be Full strip but its still being used on the road every so often, so its still got the dash and the center handbrake covering.
Other than that everything else is gone,
Iv been looking on Plastics for performance and they do a kit for the LCR for around £400 which isnt to bad.
Total weight reduction if im honest im not to sure, as much as possible tbh