ok, sweetie. today is the day for you to discover that you can do some things without a pattern. :wink:
good old graph paper and some color pencils are all you need to plan this quilt.
"map" the quilt, then divide it into blocks. if it turns out that all the blocks can be the same, "map" one, then divide it into rows. those are your strip sets. if there is more than one distinctly different block to be made, "map" the other(s) in the same fashion to figure out those strip sets.
also, check out this link to directions for making Irish Chains. to make your quilt, you'd just need to divide the big center blocks into individual blocks that are the same size as those that form the chain.
http://www.quilt.com/Blocks/IrishChain/IrishChain.html
go for it!!! :-)