Every single time the CME raises margin requirements they shake out the weak hands and reinforce the strong ones. All they are doing is making gold stronger every single time they raise margins.
Buy all means take the margins to 100% and then we have a short term crash. It would be a blessing to be able to get gold at $1,000 or $1,500 again.
"I consider going long equities for the next few weeks and take the advantage of coming gold's drop and go long when it hits $1625"
Which you have no way of knowing will or will not happen. There should a couple of if's in your message.