It indeed remains to be seen but I don't know that I'd want to be selling any kind of physical gold fund now to buy a junior.
In my opinion, gold is going up up up from here. I think this correction was BS and we're going to get some significant short covering helping us back up above $1000 in short order. The juniors will come up as well but I I think they'll trail so I feel you'd be better selling the gold fund after gold moves back up. TDC might cost you a little more but not much.
However, you may yet prove to be a genius with this move :)