So you did a bunch of work on the car...clutch job, ring gear etc years ago and never ran it ...?
Well now you do have a new ring gear on the coupling...done right, no vibration... you are golden. You just will not know for sure till you drive it in the future.
I saw on another site you asked about the pressure plate adjustment and a guy recommended you check/replace the ring gear and replace the clutch pressure plate and surface the flywheel (driven plate).
Trini is very knowledgeable....not too much on Fluid Drive couplings though.
That driven plate removal and install is a little tricky to perform so as not to damage the bellows seal and carbon ring.
Special tools were made to pull the plate off. Sure you can do it with modern tools...but ya gotta be real careful...and the FD coupling needs to be removed to do this work with out the Miller tools.
Careless service work on a FD coupling will turn into a very costly mistake.
I would just crocus cloth the driven plate as they normally do not see wear/ heat spots and cracks like a regular clutch set up.
FD couplings generally are easy on clutches.