Simple EA Modification - Easy Task

I would like to modify the attached EA to do the following: 

-EA can only have one open order at a time. No other orders will be executed if a position is currently open. As it is now, the EA opens several positions at a time. 

-EA is programmed to stop trading after a certain amount of pips have been gained in a single 24 hour period. I would like this value to be variable. I.e., if this target value is set to let's say 20 pips, after the EA has netted 20 pips, it stops trading until the next trading day. I would like the EA to post an alert when the target pips have been hit (just a notification somewhere saying the EA is on standby because the target pips were hit). For simplicity, this "trading period" can be organized around the D1 candle. If the target amount of pips are hit during a D1 candle, no other trades are executed until the D1 closes and the next D1 begins (just my idea, really the 24-hr period can be defined however you like). 

All the other options and settings are fine, I just want to add the two features above. 

I'm happy to answer any questions about my request. Thank you.

-Sigma