Awesome, Kangaroo is easily in the ranking for "Best looking cabinet ever" which is why I have a dedicated one in my living room, which I have turned down many trade/sell offers on.
If you keep checking ebay you might find yourself a Kangaroo/Centipede/Arabian/Dig Dug panel (all will fit), that has already been converted to a 2 player layout. That would be perfect in the place of that X-Arcade. You could then sell your X-Arcade off to help pay for the new panel.
One Kangaroo (and other Atari cab tip).
When they silk screen Atari sideart they screen the black on last. That means the black tends to rub off first. If you look closely you should see that most of the imperfections on your sideart will be missing bits of black. You can use a sharpie to touch that up almost perfectly. I did that to my Kangaroo, Battlezone, and Crystal Castles, and got the sideart on all of them looking almost perfect.