will it hurt. whats your opinion
People have been doing rerings for almost a century without major issue. Is it optimal? No.
Fresh hone, new rings, bearings etc.
But, once you are into it as far as cam and cam bearings, you really need to evaluate how much you want to be into a rering vs a full rebuild.
Are you doing anything with the topend (cylinder head)? If you rebuild the head you are almost at the stage of putting lipstick on a pig.