If you spent the 10 years it would take to read this whole thread, somewhere in it you’d see a post from me saying that even though I’ve grown hundreds of mellons every year for about 38 years, I still can’t always tell when a melon is ripe. And, while I’m usually pretty good at it, it is just something I’ve learned to recognize based on several factors including the shine/sheen-or absence of-on a melon. But most importantly, you would see in that same post that I think almost all the things people tell you to use- like all those you just listed- are only slightly better than a guess once a melon is full sized. I’ve seen over ripe melons with green tendrils and under ripe melons with brown brittle tendrils. Same for most of the other so called “tales”. They offer some good guideance, but certainly are not foolproof. My point is, don’t feel bad- picking a melon at the right time can be difficult. Also, some melons are a lot more forgiving, meaning they can stay at peek ripeness for several days up to almost 2 weeks (10 days) whereas others go from underripe to over ripe in less than a week. As much as I love Orangeglo, it is one that goes from ripe to over ripe pretty quickly.
Anyway, keep us posted and maybe we can help you be more successful this year.