What you have a little more than a proof of concept and it's a long way to being able to stack up to established sites like https://pcpartpicker.com.

If you do something that they don't, then either they may just copy the idea or they might've already done and discarded it. That is, you must understand your competitive edge and what it would cost to obtain and maintain it.

And if you don't have anything unique to offer, then you must know how it is that you are planning to grow, because once you think it through there's a good chance it either won't be viable, interesting or both.