For self-defense, I'm a huge fan of heave for caliber bullets. I don't pay attention to kinetic energy tables. I'm a momentum dude. I want a bullet that will penetrate deeply, hopefully through-and-through. The way I have it figured, two holes are better than one.
I never believe a hollow point handgun bullet will mushroom like advertisement photos. There are just too darn many variables that tinker with expectations. If a bullet expands, I'll take it as long as it expands en route to making a second hole.
Hence, I think you're on the right track with your 147 grain bullet design. I've carried a .45 ACP with vanilla 230 grain ball and never felt slighted.