How much would/ should it cost to hire some individuals create a website that has full social networking functionality, kind of like face book or this one.
It is very difficult to answer. Who can answer this question? It will be interesting to know about this.
Fully customized, on a proprietary license, you are looking at a minimum of $35,000. The best Hawaii website design company would be able to give you a better idea.
What are you trying to accomplish? Start at your goal and seek resources that already exist. No sense in re-inventing the wheel.
It will cost a lot. Facebook was made not only by a single person. You need a sponsor to fund you on your project if you want to make a Social Networking site.
I did something similar a few years ago.
It can cost less than a few hundered dollars :)Download Joomla, Download JomSocial.
That's all there is to it.