I too have been thinking about how to finish. I have decided to use a QAYG method from Marguerita McManus' new book, "How to Finish (Almost) any Quilt". I got it as a Kindle book for my iPad from Amazon.
It involves putting a border on each block. I will make manageable groups of 4 or 9 blocks, FMQ them and then join the sections. With this new method you can hardly see the joining strips, as they blend in with the block borders! With this sashing method, I will only need 36 blocks to make a 90 x 90 quilt, which is what I want. Maybe I can make matching Euro shams from the remaining squares, as I hate not to complete the project. You can check out her blog at
www.crazyshortcutquilts.com. She also has some very interesting videos on her blog.