[thezboee]

I'd put my vote in for both MightyROM (4/5/R3BORN) and SilenceROM, both are speedy.

There isn't a way to only install certain pieces, however both Mighty's and Silence's ROMs are fairly light with the software they install. Most of what they do are just tweaks to get everything running faster.

You could download a kitchen and make your own ROM, but that's a bit tricky for those just getting into the game.