Getting out is always depend on its individual actually, if you know you already gain for it you can get anytime you want. Then if you are aiming to gain big well I guess you need to hold on for it in a long term basis, just simple as that mate. If I where you if you have that huge amount it is better for you to invest it in different altcoin which is I knew its potential and has a capability to get higher in the near future where I am sure I can harvest a big reward.