I have a massive cupboard space that is currently not very functional. It's about 7.5ft tall and 12 ft in length. I want to turn it into a functional wardrobe / storage space but have absolutely no idea where to start. Currently has 4 massive doors that open out - they drive me mad. The bottom space holds a defunct air heating system which I would want to get pulled out but I don't know if there is asbestos. Where would you start? Any advice greatly appreciated.