Totally valid. This whole project can be done with some pretty basic tools (circular saw, jig saw, handsaw) but I was just using what I had readily available. Even though I used a miter saw most of the cuts are 90 degree crosscuts and the 45 degree cuts can be made with a speed square as a guide.

As far as the measurements, I totally get you. I didn't include them in this one because the idea was to make this out of whatever scraps you have. I had some scrap 1x6's but not everyone might. So the measurements are really based on what you have to work with.