Lets put it this way. The DA weighs less than 60 ounces with the engine, standoffs, stock muffler, and ignition module, and will put out almost 30 pounds of static thrust at sea level.
The Evolution weighe 64.9 ounces by itself, then add another 6 ounces at least for a light muffler, at least 3 for the ignition and 2 or 3 for the standoffs...you are basically a pound heavier and have way, way, way, more power than you will ever need. A very bad choice for most 30%ers, imo. It is more for planes in the 20 pound range, and if you build any of the currently available Yaks that heavy, then you've ruined it anyway and it doesn't matter what engine you use, anyway.
Stick with the DA, use a stock muffler, li-ions, wood prop, CF spinner, no smoke, and no wheel pants and you should not go over 16 pounds, even with the copycat Yak. My Yak weighs 16 pounds, even, and that is including a full tank of fuel. I fly at 7000 feet ASL and am still breaking the engine in and have unlimited vertical and hover pullout power.
BTW, I know they are hard to come by, but EF is the only Yak I recommend...