I built my own 6x2x2 stack. If you post a design, I would consider a comission build for you. the part-wood front is not hard to do. travel to lancashire (Bolton) most weekends so could even deliver. The dimensions might mean assembing and your end though, not sure I could fit anything over 6ft long in the van in one peice. Rather than perspex, why not consider toughened glass (6ml)?, perspex has a tendancy to shatter under force, so may not be the best choice