What is the minimum balance I need to start?

It depends on the strategy you're copying. If you decide to copy the Iron Condor Strategy, you can start with as little as $1,000 USD to enter one Iron Condor trade at a time. The minimum recommended is at least $3,000 USD, so you can join up to 3 Iron Condor trades simultaneously to diversify risk and increase returns. If you want to scale the trading balance, you can increase the position size (amount per trade) and the number of simultaneous Iron Condor operations.