Once you go 40% and get a layout working for you, you'll never go back.

Try putting the numbers on a layer under home row, F-keys on the bottom row and the shifted symbols on QWERTY. It works well once you get used to it! Even better if you use one of the spacebars as an FN key to toggle that layer.

Great job with the build BTW! I'd love to build one of these if only it had a few more keys on the right side like my MiniVan.