I would agree with Marcopolo123 there.
If your willing to take the risk , do the custom loop as it will be more better and automatically create/awake the modder in you.
Also I wouldnt recommend buying PC from faraway , unless you can manage to get it RMAed , as its a big hassle. Better off picking parts from online retailers or local stores , where you can get it RMAed with ease or from the OEM itself.