I understand accepting that you can't eliminate every and all dangers that your child will encounter throughout his/her life, but why not eliminate the easy ones?Seems pretty clear to me.
Don't use it. You don't need it and it's a 100% avoidable, unnecessary risk & expense. If your child, when he/she gets a little older, needs something to keep from poking limbs out of the crib, you can get a breathable bumper from Amazon. That's what we did. And, btw, it was such a pita to have on the crib when I needed to change the sheets after a diaper blow-out that I only kept it on there as long as absolutely necessary - about two months until DS stopped sticking his arms/legs through the slats. You may not even need it at all depending on your LO.
All you really need are 2-3 crib sheets. Seriously. You can also buy a quilt if you want and use that for tummy time. And you can still have a really adorable nursery. Actually, I prefer rooms that are put-together but look like they came together organically over rooms where everything has the same matching pattern. But, really, you don't need the rest of that stuff at all.