buy applecare...
He is correct that you have one year from the purchase date to add AppleCare... just make sure you don't forget. It is worth every penny.
Amazon usually has it a little cheaper, and sometimes you can save as much as $50. Buy your ram third party if you are trying to save some money...
I just bought 16gb ram from RamJet for just under $500, and OWC was about the same (Apple is $1000).
cheers,
michael