The lubricant will still have aged. With little use it's also not moved very much. My inclination would be to get it service.
I've been in a similar situation. In 2010 I bought a 2002 Rolex that had not had a service. I wore the watch for 3 months to make sure it was right for me & then sent it off for a service. I felt at that point it became mine.
It's current back at Rolex for it's second service almost 9 years on.