It pays off to have a local shop of trust where you go and tell them about your idea for components and if they have any technical recommendation or objections, then ask them to put the stuff you have chosen together for you. That's how I do it. In case of problems, I can ask them and always go back there. That they also have fair, even cheap prices, I do not complain about.

But d09jn g some internet research on choosen items and what customers say about these, is a must, I would say. Never blindly trust any salesman - NEVER.