I've a MacBook 4,1 lying around running Lion 10.7 and I'm thinking to install Linux through a virtual machine. Given that this MacBook will from now on operate just and only to run VM/Linux, I would like to reduce the battery and/or RAM consumption by removing unnecessary Mac system apps/processes. Looking to strip it down to absolute minimums that the system needs to just run VM/Linux and nothing else. I have already uninstalled my own apps, as well as most of the default Mac apps/utilities (like QuickTime, Safari, iTunes, Grapher etc.) using AppCleaner. Any software that could help me handle unnecessary system and other processes? Thank you.