No, because even if they are all on the same page, the code implementation could go badly, and fuck the system up as a whole, so you're most definitely going to see a lot of people pulling out before August 1, 2017.

On top of that, the upgrades are still not over, some are saying that it may take until the end of November to fully upgrade Bitcoin, so you will see this kind of fear and volatility until that time. A lot of people will lose money during all this, and the best thing you can do right now is wait and see.

If you wanna take the risk of riding it up until then, be my guest, but remember... every time you pullout... you gotta pay taxes on whatever gains you made, so don't forget to calculate them in whenever you do your earnings assessment.