There is quite a bit of information on the Internet regarding changing if RH with temperature, actually, now that I’ve gone down this rabbit hole. Since I preferred 65% to begin with at 70F, I’ll stop at 75% at 60F, some of those chart numbers seem way too high.
I also think it’s better to err on the slightly less RH than slightly more RH side of the equation. I’m very confident 60-62F at 75% RH will be just fine. Maybe not necessary, but just fine. I’ll certainly report back in several months if I’m wrong, I’ve never been shy about admitting I’m wrong.
But the conversation here sounds very much like IT’S SETTLED SCIENCE! type ‘discussions’. I think it’s run its course. Thanks for the replies.
I genuinely do look forward to your results over time. Hope it all works out for you and get the desired result you're looking for.