Reprogram in MQL5 an EA in line with a specific schedule with Range Auto SL and TP

I am in the middle of conducting a complex experiment. And part of this experiment entails modifying an existing free MT5 EA (DarkCloud PiercingLine Stoch, for which i can pass the source code to you if you need) to:

• run only on specific days and within specific hours on those specific days. I will provide you with the schedule. I need the EA to come with scheduling choices so that the user can choose which days and times during which the EA will run;
• contain options to either place completely random trades or follow its existing DarkCloud PiercingLine Stoch logic for determining under what conditions to place trade (can be a "randomiser mode" on/off in the inputs)
• automatically add SL and TP based on ATR as the EA places each trade regardless if the randomiser mode is on or off.
• NOTE the  ATR timeframe = current, ATR period = 7, ATR shift = 1, TP factor (ATR value x this) = 4, SL factor (ATR value x this) = 6
• always hold each position until either SL or TP regardless if the randomiser mode is on or off. The EA  (DarkCloud PiercingLine Stoch)  currently has its own decision rules for closing trades based on stoch and for that reason it sometimes closes trades prematurely. I need that to be overwritten so that the EA always holds on to each running trade until either SL or TP is reached.

I look forward to finer discussion and working with you on this part of my project.