kevinkt: Pull the cord, order your system, and don't rethink anything... there is no such thing as a "perfect" system. All systems are a balancing act where you get something you need at the expense of something you might like. And all the decisions are made before you really know what you are going to be doing with it and without knowing what Apple is going to announce next month, next quarter, next year.
So ... no regrets. Don't check back here once you've ordered, and keep in mind that if you wait to see what comes next, or to see what people recommend next, you will never get a new computer. Cheers and Good Luck.