"I would really rather try not to buy anything more than I absolutly need"
Sounds to me like this just isn't a good time for you to build. I'd either put the stuff aside or just sell the stuff. Personally I think it's better to sell, use the money, but new stuff later. When you get ready to build contact me or someone to line out a step-by-step of going from a box of mystery components to a running machine. I've been where you are.
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