if u want to trade with 8 lots then u need a deposit of 6000$ but if u afford that much amount then u can start with it. At the same time if u have huge capital then u will make large profit and become millionaire easily and if you have 1000 $ then you can trade 8 lot or more but never try it in real with such small amount. to really trade lot like 8 you have to balance more than 10000$. for big lot trading we must become sure about the trend and keep it in trade as for short time and try to set a stop loss so that not too big loss have to face. if you got it in profit then reset the stop loss in 1 or 2 pips profit level and wait. if the trend goes in you favor then you will get very big profit and if the trend reverse then at least you got 2 pips profit.