Bearing swap would be the right way to do it.
Find the CRF230L wheel bearing into here:
https://www.partsgiant.com/all-balls
You should be able to find the bearing number and related dimensions.
I'm not certain right now what the axle sizes on the Templar are but you'll needing a bearing with an OD the same size as your hub bearing seat and an ID that matches the Templar axle. Same for the seals.
Went down this road years ago when I did a super moto conversion on a '79 XR500