Some times one of our trade goes in minus and our TP rate could not be touched for several days then we need more money to hold this trade I do not think big capital is best for all time while i think you should sleep well to trade with good mind and i think at night forex not move much because there are few traders in the market and you can sleep well and have good day till 10(instaforex trade) though you have 1000usd balance in your account