Acrylic probably won't do anything like felting. (Some will do something like it but I haven't seen anything like that from Red Heart.)
I would grab it. That's what I crochet afghans out of. It was good enough for Gram (and what I was raised with from her afghans) so it's good enough for me.
It softens up fine after a few washings.
1 or 2 skeins isn't stocking up, that would be a scarf. I would need 20-40 skeins for one crochet afghan.
I think it took 5 skeins of Red Heart Sport to knit a baby sweater.
You have to think SALE and buy more than you will ever realistically use, like the bags and bags of Yarn Bee Luscious I have that I'm sick of working with or the boxes of the same my sister has.
Acrylic stored in a skein should last forever. Keep it out of the sun and dust so the color doesn't change, or if it does it does it evenly.