I would think twice before fitting Brooklands screens. From experience, if it rains the water runs up the bonnet and straight onto your lap. I know the fitted screens are not the best but they do divert some of the rain, wind, stones etc. I had Brooklands screens on a JZR kit I built and they didn't do much of a job of protecting you from the wind, rain or anything much, they look good though.
For information, my pedal box is positioned with the rear bolts in the 4th set of holes forward. I think this may be a dealer modification as most I have seen only have 3 positions not 4 but I asked for the pedals as far forward as possible. The brake master cyclinder is only about 5mm off the front footwell face, so that is about as far as it goes. I have the front of the seat raised 40mm and it's all fairly comfortable. I am 5'11" tall with a 32" leg.
As for the M3W being a very expensive kit car 897, well I think that is what we have. In "standard" trim it is never going to be even close to perfect. It looks great and sounds wonderful but it should have been so much better from an engineering point. With a little effort (and more money) most of the problems can be sorted but at £30,000+ that is not what you want really.