you do realize its going to cost around 1000 bucks to to build an 8X8. i've priced it out before, you need 4-4X8 sheets of 1/4" poly, they start at around 190 each plus your shipping so figure 800. and you figure around 120 feet of steel witch comes in 20 foot sections witch you need to cut to 12-8' and 4-4' and your also going to need various fasteners, plywood for floor and roof, and whatever kind of electronics you want to run, lights, and other miscellaneous stuff. its not just a Sunday build its takes lots of planning and funding