This might not apply to you since you got alot of storage, but i have a 64gb crucial m4 and i turned off hibernation mode and it saved me almost ten gb of space. So if you are low on space and you don't use hibernate then i definitely recommend turning it off.
I would kill hibernate anyways as it causes a lot of problems usually.
Another thing is Firefox can be cached to RAM instead. Makes it faster and saves your SSD the extra writes.