Hell yeah restore it.... it's Evel Knievel !!
(oh wait, I already told ya my opinion)

I always start with a good solid cleaning, everything, top to bottom.
This especially gets you very familiar with a machine of any kind.
Then work on getting it 100% functional.
Your problems will more than likely be in the MPU or power supply.
No biggy, the older systems are very well documented and easy to fix.
Get a new rubber ring kit cuz I'm certain it needs it.
Clean off any and all contact switches you can find on the playfield.
Then go from there on the cosemtic stuff.
Get it
playable, then make it pretty.
The fact that you have a great backglass is a
major plus.
$100 for a complete non hacked up pin is a good buy anytime in my opinion.