Great score !
Is the whole front wheel/back wheel mismatch gonna drive you crazy like it does me on a bike ? Like I said elsewhere, I hope this is a keeper bike. I have heard Jamis is an older bike company that was originaly known as Jeunt,French spelling j-something and It is still owned by the same family.
Glad that you found a great example of this early MTB, hold on to the parts you change out so you can go back. Certainly dodged the bullet by not having to deal with a repaint !
Regards, 3SS