My point of view right now: It depends on BTC now. If BTC remains stable/above the 6K area, The area where XEM is in right now would be a good buy moment. If not --> The next area is in play for XEM.
What I'm doing right now: DCA a part in this area, leaving some back up money in case XEM drops further. In case it doesn't drop to the lower area, I'm waiting for a clear sign of reversal and buy in a bit higher.
In conclusion: No need to hurry right now, focus on a good strategy. There is a high possibility that you'll gain 1000% in a few months of time.