This would certainly be the ROM I would recommend. Also, we have a custom kernel you can install which will help with performance.
As for installing, you'll need to a install custom recovery, TWRP 2.8.7.0 being the one you want. You can install it with Kernel Adiutor (this will be the app to use for tweaking as well), available on the play store. I am about to write up a new guide and make a video on this process if you can wait a few days. Everything is available in this forum if you want to look around for yourself.
The most important thing to keep mind with this stuff is if nothing's says it's for this phone, don't use it.