I know the doors are very light after stripping everything out of them. Depending on if you want to spend some $, lightweight master cylinder, rack and pinion would get rid of that heavy steering box.
I know the alterkation kit is alot of coin, but they definitely shave alot of weight. A steel hood is about 55 lbs, so you could just remove it, but maybe you are fiberglass already? I think you have already removed weight in the easy areas. Racing seats and fg hood.
May want to consider a rollcage soon too.