Marilyn, my eyes didn't roll one bit...but I would hold off planting it. It is already situated in some sort of medium so it should be alright until conditions that don't involve snow, cold, wetness, etc. prevails.
In the meanwhile, if the area you are planting into has different exposure, now is a good time while the sedum is still portable to acclimate it to the exposure it will be in. Especially since you will be holding back on putting it where you want.
I always note what the exposure was for the plant when I buy it so that I know how much acclimating I need to give new plant. Sometimes things purchased from a greenhouse needs to acclimate gradually to outside sun exposure by 10-15 minutes a day (in light sun to more sun) until fully acclimated. Wind exposure is another thing to consider hardening off new plants to.
If you have seen evidence of rabbits/critters relishing your succulents you might consider a deterrent but I find that some critters just taste and move on and of course some make a meal of it. So just observe.
Don't feed until it gets more established and afterwards just half the dose of whatever you get as succulents grow slower.
If after planted, I always cover with shade cloth, frost cloth, seedling cloth, or whatever cloth/sheet if there's chance of frost. You might see/check with others regarding what they know to be hardy for your temps in your area. Neighbors and/or other people growing succulents can give you their experience.
Kevin just gave me some sedum that I whole heartedly assume will survive the Salem Oregon winters in the future as I know "he's in the Know"...
Sorry this was so long but you can take a nap after this and make your decision later.
