Probably not any down side to planting now. Won't do much till spring. I planted two a few years back and got quite a few fruit off of one of them just this last season. They are quite cold hardy so that was a great choice in variety. When I planted mine, I dug out an extra sized pit and put some top soil material in the extra space to provide something besides just sand to give the roots a head start.

Good luck!

Dave

Just remember The cold hardiness temps that you read are for well established trees. Be prepared to protect it in case of a hard freeze.