First ... Welcome to the forum. I'm just finishing up an extensive design phase for my own Modernaire/Cub build. There are hundreds of builds that are excellent to show you more or less step by step all you need to know to design/build your own.
My suggestion is to download the Generic Benroy Plans at the top of every page in the forum (I know it's not the design you're looking at, but virtually all the concepts are the same.) There are too many great builds to name them all, but my favorite build to look at is Thomas' LT (2bits). Thomas really did a wonderful job and was very thorough at documenting his challenges and triumphs. You can find his build
here and
here.