well, i would say to look around first. See if you can find any deals.
Mine is 8 x 4 x 2 by the way. If you can't find yourself a financially reasonable deal, then check to see how much it would cost to build it, then go from there.
Yeah it was mearly for his benefit that mate i speak with him privetly and just didn't want him gettin confused maybe i could have worded it better sorry man !!!