brake and clutch flush this weekend

[SeanZ4]

Sorry, I know this subject has been covered ad nauseum. I want to do a hydraulic flush this weekend. I've never done the boxster. It was last done 2/07 by the dealer I bought it from. I have a nice brake bleeder machine left over from my bimmer days that fits the boxster cap perfectly. My question is: I'm in a small town and we have the basic stores, autozone, oreillys etc. What fluid would you guys recommend that I could purchase at one of these stores??? And also, how much should I buy to do all four wheels and the clutch slave??

thanks in advance!!

sean