Anything is possible depending on your pocket book.
I would start off with a design given the colours that are available. You will have to determine the weight of the yarn required to be woven. No doubt the people who spin the wool know someone with a loom, and they could weave it to a single width 28" x 324" length. Depending on the weaver this could easily take a month.
I doubt commercial establishments will risk taking customer supplied wool.
The obstacle a cottage weaver may face is doing the kilting selvedge. So you may end up having to hem it.
Now this might be a good project you can do. Here is a company that makes looms. http://www.leclerclooms.com/Lec_Cat4.htm
My father also makes looms but he's rather busy making kilt hose and celtic harps.