Have you used Trucha Bug Restorer yet? Because if you haven't it would be a good idea to use it. I know you said about the black screen from homebrew apps but don't worry run it via Bannerbomb. Put the boot.dol on the root of your sd where you would've put the hackmii installer. If you have already done this, just say. If you haven't, reply to say so and I'll message you a tutorial.