Nice! X-Arcade has a lot of DIY gear available now, including no-solder circuit boards & standalone buttons & joysticks, as well as arcade-grade monitors:
http://www.xgaming.com/store/category/arcade-parts-and-accessories/
Their pricing is awesome too - $79 for a board, 2 joysticks, and 20 buttons tested to 10 million cycles. People give away CRT televisions for free on Craigslist and imo those look the best for retro gaming short of getting a dedicated $500+ arcade monitor or candycab. I've got a pair that are in process now - one with a KADE controller and one with an X-arcade controller. Just need time to finish cutting the wood & throw some graphics on it!