Take a block ( or the sections of the block) that you like take it to Kinko's they can scan it and enlarge it and print it on paper that can be as wide as 48 inches.
You can also download it to a memory stick and take it in that way.
I have done this on more than a few patterns.
If you do not have a Kinkos near find a print shop that prints architectural plans thay can do the same thing. And you can e- mail to them tell them how much to enlarge it and pick it up.