I want to do a simple ea with Parabolic sar & EMA

I want to do a simple ea with Parabolic sar & EMA like this:

1. I can customize Parabolic sar & EMA parameters in ea settings

2. Lot: 1. Lot value as a percentage of the account value corresponding to the SL; 2 fixed lots.

3. Trading time: ...h... to ...h..., trading time out: 1 holds the previous open order; 2 close all open orders.

4. BUY when all of the following conditions are satisfied:

+ The whole body (including the highest and lowest points) signal is above the EMA

+ Buy immediately when Parabolic sar gives a buy signal.

5. SELL when all of the following conditions are satisfied:

+ The whole body (including the highest and lowest points) signal is below the EMA

+ SELL immediately when Parabolic sar gives a SELL signal.

6. TP, SL,  Trailing stop,  breakeven point (The breakeven point is to set the SL to the initial order price + extra points - I can choose this in the settings (because there are spreads and commissions)) - with all these parameters, if setting is 0 it means no setting

7.  Only 1 order can be opened at a time on 1 chart. If there is a new entry point but the previous order has not been closed, the new order will not be opened for each currency/chart pair