Need somebody with Firefox knowledge to check custom config for a Linux distribution

Hello!
We need a favor, there’s a Venezuelan Linux Distribution called Xanadu https://xanadulinux.wordpress.com/ made by sysadmin/hackers to have a lightweight distribution and they add some custom configs to Firefox (about:config not before compiling) in order to reduce RAM and improve network performance, can somebody help them to check if those values are OK or if they can add more custom values?

Values can be seen at: https://github.com/xanadu-linux/iceweasel-config/blob/master/prefs.js

Thanks in advance