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You're welcome. Definitely take it in stages. I think you'll find that when you build up "Stage One" and start getting your hands on the modules, you'll revise Stage Two, etc. The more rackspace you have available then the more flexibility you have to change your mind later on. At some point, though, you just have to roll the dice and order something. Don't be afraid to make mistakes while learning... just limit your exposure ($$) to what's comfortable.