There won't be too many opportunities in a lifetime to see an investment go parabolic like this... I think you can still get in now to enjoy most of the ride.. but the longer you wait, the less you (or I, or anyone with normal $$) will be inclined to join as the big boys will take over. When big wealth moves in... watch out.
I liked this piece today... only enough Silver for 1M folks to hold $25K worth each. Between my physical and my PSLV... there is only enough left for 999,998 people to get theirs : )