Incredible Multiplication of EA's Power: HELP MAKE THIS HAPPEN

 
I want to make a strategy with high return compilation of 3 different setups for 3 different trading currencies: EURUSD, AUDUSD, NZDUSD. The system lets ONE trading currency using margin which is not used by other two.

This is so as to enable the system generate generate 50-70% per month or more.

Knowing that high returns usually includes high risks,the strategy will use about 50%, 25% or even 10% of trading account. The system should have specific setting that allows the trader to limit margin usage. With that, you can use only 50% of account.

I have an EA am experimenting on; you can use it to respond. See it at https://www.mql5.com/en/code/9730