As an owner of vintage Nikon gear (an early F and Nikkormat Ftn) I would definately suggest the 105 lens as part of the arsenal. I'm right now putting through its paces a a 60's vintage Nikkor-O35 f2 which is a really nice lens,nothing like vintage glass. As Claire said it all depends what you are shooting, that will determine your lens selection. The FM3 is a modern classic, enjoy in good health.

Uncle Bill