Wow never seen a cab dedicated to this game. The star wars yoke is a nice touch. I suppose the gear control handles speed. Very nice! What version of Xwing are you using? Is it the one with CD audio or MIDI soundtrack?
My cabinet is not dedicated for this, it is mainly used for arcade and some console games but I thought I would have a try at adding some old Dos favourites

It is the midi one that I have...never played the CD one but I like the midi music...it's the version I played all those years ago...
I still have to ask though: How do you plan to keep up with all the other frequently used input stuff? I remember this game using a lot of keyboard input. Your cab doesn't seem to have enough buttons. Wouldn't you need a whole bunch for things like cycling targets, weapon/energy management, go to hyperspace, etc.?
It doesn't really have enough buttons but I can get by:
P1 start = next target
P2 start = cycle shield direction
Left trigger = select nearest target
Right trigger = fire
Left thumb = cycle laser power
Right thumb = cycle shield power
Shifter (lo) = hyperspace
Shifter turbo = cycle weapon
Throttle pedal = speed up
Brake pedal = slow down
I will probably adjust some of these a bit after a bit more play time. Also, I have a wireless keyboard just out of shot to the right of the cabinet which I can reach to if neccessary, but I think I have the main keys covered.