Last night I received my certified apple refurbished 27'' iMac Specs: I want/need to upgrade my RAM since I will be using this machine for video editing.. and since the max is 32GB I was wondering what some of you might suggest I do. Is it wise to buy the RAM myself (assumed cheaper option) and install it myself? If so, is this a tedious process? Would it void my 90 day warranty/would it void my applecare when I purchase it? Am I better off going to an Apple store and buying their RAM/having it done there professionally? I plan to upgrade to the full 32GB. I mean... why not, right? Any insight would be greatly appreciated.