Hi, I presume this is a variety of Agapanthus lilliput, if so it is fully hardy, but if you're not getting it until november, I would plant it, and give it a dry mulch, at least for the first winter until it gets established, the height and spread of these is about 16" so 1 ft 6" sounds about right, Derek.

Might post about a pickaxe later if its frozen up

Hi, should have said, if the ground is frozen or waterlogged, wait until it either defrosts or dries out, is it a bare root p!ant you're getting?, if so, and the conditions above apply, plant up in a pot until conditions improve, Derek.