If you belong to a Guild or if you have a friend with an Accuquilt Go or any other cutting machine you may be able to borrow or use it to cut them out. A friend of mine is making a DWR for her daughter she & I got together and we cut out enough for a King in a few hours - she ironed the fabric with starch and I cut until she finished ironing then she did the cutting. (It was my machine, and I already had the die so she brought the fabric and snacks.) We did the same thing when she was cutting out 5 inch squares.
Do you plan to make a scrappy version of a tumbler or a planned color scheme? It's a fairly easy quilt. The instructions on MSQC are easy to follow and remember. Here is the website
http://tutorials.missouriquiltco.com
Just put: tumbler in the search box and it will show you several.