How about when the coin has split? We don't know what's going to happen on August 1. We don't know how will SegWit activation affect us. The days when you can simply hold your bitcoins and earn profit after a couple of months is already over. The scaling issue is being solved and it can greatly affect the price.
Bitcoin investment is risky right now because of the new update. I want to advise that you use an altcoin to avoid the price decrease of bitcoin. When the price of bitcoin has decreased a lot after August 1, bitcoin holders will be devastated but the price of altcoins will increase. Otherwise, if altcoins' price decreased instead, then it's okay. That's the small price to pay for trying to be safe from the incoming wave.