HI!
2 questions!
1) Should I invest my money in crypto NOW or should I wait till 1 aug or till i dips again (if) ?
2) Can I keep altcoins (no bitcoin) on Bittrex during the 1 aug fever ?
1. I think if you want safe you can invest after 1 August, but if you have more money you can invest right now, take your own decision by looking at the current market price analysis.
2. Yes your altcoin safe on Bittrex.