I was going to say no way, get 8, but...
I finally decided on a MBA 13 with i5/8gb RAM/256 SSD. So I went to the local Apple store today and they said Id have to order online if I want 8gb RAM and it would take approximately 3 weeks. The website actually says ships in 1-3 days.
I had wanted to wait until October and see if the rumors of a 13 rMBP were going to come true. However, my 11 month old was kind enough to remind me how careless I was leaving a cup of ice coffee too close to my 2008 Alu Macbook. In fact, I had been totally fine with my nearly 4 year old model (2.4ghz/4gb RAM/500gb Momentus XT) that I figured this MBA would hold me over for another four years, provided I become a better parent. I clearly dont do anything intensive with my computer. I rarely had any page outs. It would stay at 0 for days.
I couldnt get a straight answer on recycling and that Apple store is a zoo, so I went to a Yodobashi store to play around with it a bit more. One of the sales girls came and I told her I wanted 8gb of RAM, which can only be bought online. I knew I can mail my busted MacBook to the recycler for free, but asked if she knew how to get rid of my super old Win XP PC. She said there is a promotion right now. Buy a MacBook, well take your old PC and give you ¥20,000 cash. Not only that, but Id get 5% points (pre-cashback) which will come in handy when the new iPhone arrives. Problem is, no 8gb RAM.
For 20% off (including the points), Im now thinking 4 will work for me. Am I right?