Stop Loss EA and Risk Management

I would like to create an EA with the following criteria:

1) Fixed stop loss. Stop loss CANNOT be adjusted after entering order even changing manually using the terminal or by dragging. If changed, it will go back to the original stop loss setting.

2) Take profit auto set to 40 pips (adjustable in settings). Take profit can be adjustable using manually and using dragging.

3) Maximum open order allowed. Only 3 (adjustable in setting) open orders allowed. If more than 3 the latest order will be automatically closed.

4) Risk management in which maximum 20% (adjustable in setting) of capital allowed per day. If more than 20% capital used, all trades will be auto closed.