Since gold is at record levels already (and slid last week) it's probably not a good time to invest. I would sell what you have and wait until mid-Fall or so to re-invest in a mutual fund.
Your profit margin when gold is so high is very likely going to be too low to justify the risk of investing right now.
I think that if it gets bad with Iran, and the Russians and Venezuela begin to sell oil based on Euros, gold could go through the roof. Over $1200 is realistic.
I am certainly going to keep what we have now. I am leaning towards holding off on many more purchases. But I may change my mind. I really have many concerns with foreign countries doing anything they can to undermine us.
I have worked for my money all of my life. And I have socked away much of it. I have never let it work for me. Our broker wh manages our IRA's and mutual funds really doesn't like me buying gold. But I am not sure if I trust his motivations. And he poo poo's my fears of political or terrorist turmoil.
So any courteous advice from folks who have is welcomed.