That guide looks pretty good. the 103 is famous for long chain/guide life.
Mine has 175k and still going strong.
If there is still a reasonable amount of plastic below the groove, I would sure leave it alone for another 100k or so; thise guides are a hassle to replace.
If the chain makes no discernable noise, should be no problem.

On the other hand, my valve seals/guides in the head used oil after 20K miles. I finally re-did the head at 100k, after the gasket leaked, and no more oil consumption problems. you may find that just doing the seals will not fix it well, if the guides are worn.

DG