The best idea would really be not having to mess around with the App store at all.
This is the OS software, not a game of Angry Birds. I think it's a bit ridiculous to have to do it this way.
I'd like a disk with the software on it and no messing around.
Apple are paving the way to go optical drive less, the fact that all their recent software launches and OS have been solely on the App Store seem to point to this.
I wouldn't expect an optical drive in any of the next releases of macbook/macbook pro etc. they'll probably dedicate further space to the battery.