100:1 leverage is not recommended due to lack of profitability.
500:1 leverage is not recommended due to high risk of draw down and possible margin call, especially for new or under-funded accounts.
You should also SERIOUSLY consider signing up for an account at Cash Back Forex. For each trade you open, you get a rebate from the Spread. And since RoboMiner opens a lot of trades, you can earn a lot of money back as well.
You should also consider hosting your robot on a VPS so you don't have to worry about your power going out or your robot crashing and losing money: