hey man, im 17 and a senior in high school to so i know its hard to come around money and tools. My first cab was a head to head cocktail, 4/8 way joysticks, 6 buttons per ( Witch is an over kill), computer off ebay, and a decent lcd monitor. This project cost me $450, parents made me sell it but i have built 4 cabinets since, 3 cocktails and refurbing a showcase. First advice would be to get the control prices down and the monitor, good two player control panel should cost you around $100, monitor=$60-$80 off ebay, and then 200 for wood, plexi,overlay, and all that good stuff. You want to go cheaper buy the control packet off ebay, $30 bucks and you get two 8 ways and 6 buttons per. Theres many options. Good luck bro
PM if you need more help