@mattjam3000: The size is something you can potentially determine to your desires, but after looking at images of time crisis arcade machines, I think the diagonal of 26 inches for a CRT arcade cabinet is about right, especially in the 4:3 dimension. Time Crisis machines came in various forms it seems. The image on the left shows the edges of the screen have a border around them, making the screen in this cabinet look larger than it is. The pictured gun handle can't be more than 6 inches long, so you can estimate the dimension of the screen from that.
There is also the consideration of standing right in front of an arcade machine, as opposed to sitting on a sofa playing a PS1 through a conventional TV set some distance away.
Screen sizes have increased dramatically in recent years. My first PC monitor was 14 inches, while 17 inches was considered a luxury for only graphic designers and show-offs. 32 inch CRT TV's were considered generous in the 1990's and larger screens were usually rear projection only. The living room has changed and I remember in my childhood that the TV set was hidden in a corner and many people had their TVs hidden behind cabinet doors, as watching TV had much more of a stigma associated with it then than it does today where the largest possible TV screen dominates most living rooms.
The only experience I have with arcade cabinets is when I worked in 2nd hand shop after I left school. The shop had an original Space Invaders arcade machine with a small black and white screen and coloured bands overlaying it. The machine kept going wrong (screen blanking out) and I repeatedly fiddled with the boards and connectors to get the thing working again - which it did for a while before going wrong again. I learned much about fixing things that turned up through the shop (a bit like the mice in Bagpuss). I remember the Arcade cabinet weighed a ton since I had to move it away from the wall every time it needed a "service". Sorry, I'm rambling...