To upgrade/repair or not...Thorens TD165

So I am the original owner of this TT.  It hasn’t been used in 30years, but stored properly...  I’m thinking about spinning vinyl again.  I’m thinking about changing the tone arm wires and cables.  I have a new belt.  Assuming everything else is in good condition, is it worth putting a couple hundred bucks in it to get the wiring replaced?  Then I will need recommendations for a cartridge and a phono preamp....or am i better served buying new for occasional use?  The turntable has sentimental value and I would prefer to do the repairs.  I appreciate any guidance this group can offer..

Thanks...