"Intention is to mix them with compost for my potting mix. "
That's the plan here, Snow!
I'm hoping to get enough of my home-grown compost going, to mix with the new stuff and maybe there'll be enough in the mix to get the germination going!
Sadly, I've also learned today that my local GC may be closing next year, and I'm absolutely bereft...
They have loads of the real, proper, peaty Jack's Magic, and I may well bite the bullet and buy the whole lot they have left and store it here! I don't know how long it will last, but there's only one way to find out...