I bought a 1998 Boxster 2.5, did I make a huge mistake???

[Vista glass]

No you did not make a huge mistake. Drive, enjoy! IF it breaks at least you enjoyed it. Then go down the logic/decision tree. I have a 98 with 87K. I did the LN upgrade when doing a clutch. The old bearing was in great shape, but since I was there. If you are stressed I prescribe a long drive on a twist stretch of road for relief. Otherwise I'll give $3000.00 for it to help you de stress.