They haven't announced a snapshot date AFAIK. I was also thinking keeping my EOS on an exchange ready for trading. Personally I'd wait a little more to register my EOS. Keep an eye on announcements. I check the Twitter and reddit at least twice a day. If EOS had a massive bull run with a sudden crash like Tron did, you could sell high and buy more later. If you register the tokens you have safety and you are bound to get your IQ tokens. It's a pros and cons situation. Personally I won't register yet. You are welcome to your decisions. Maybe you could do 50/50.