Your comments are generally good. The key is not not over-leverage. Even if you have a trading system with positive expectancy, you can still blow up your account with too much leverage. That is because trading systems with long term positive expectancy still necessarily have drawdowns, and too much leverage will wipe you out during those drawdowns.There are risk-of-ruin calculators out there, or even more conservative risk-of-drawdown calculators out there which can help calculate the optimal leverage for your situation.
Something a lot of people don't realize is that whether a binary options broker is a scammer or not does not matter. Take an honest binary options broker, and look at the payouts. They are downright terrible. Your odds are literally better playing at a casino than they are with binary options. It is very very difficult for a trader to get a win rate of greater than 55% on these even trades on a long term basis. Sure people can sometimes do it in the short term, but extremely rarely in the long run. Now apply that 55% win rate to an 85% payout and what do you get? A long term negative trade...