my advise is to decide first if its gonna be more of a deco furniture or useful arcade machine . nearly all classic designs are pita when it comes to playability. building a cocktail table from scratch is very difficult compared to other cab designs . u have to consider so many things , like hight and depth of the cab and panelsize , screensize , screentype crt or lcd (ips panel ) viewing angle ! , players sitting position ( most classic arcadecab developers seem to have forgotten that humans have legs or can be more than 1,50 m tall ) . reasonable screensizes are 15-21 inch vertical and 20-25(23us) inch for a 2p hori setup .
the good thing is , there is a lot of material on the inet. take all the time u need for studying pics n plans , build a cardbord mockup etc. to avoid a desaster.