My my bet is on it fires right up and plays fine.
I’ve had a few NIB arcade games and they never seem to have issues unless they got exposed to water or something like that.
Also, I would be less worried about the original batteries leaking as much as I would if they had been replaced at some time.
Also doubt it needs a cap kit. Yes the caps are old, but my experience has been if the game wasn’t being used they are probably still good for now.
Guess the OP will find out soon enough.