Amendments to an existing martingale EA on MT4

I have an existing martingale style EA that works well. I wish to add some extra features to it, without messing up any of it’s existing functionalities.  

1)      I want to introduce a ‘max profit per cycle’. As an input. Let’s say this is $50. When the current martingale cycle makes a total of $50, close all the trades in this cycle. And this profit of $50 is after the commission and swap are deducted. 

2)      Currently the user is inputting a “starting lot” size. I want 2 options for calculating starting lot size. One is as it is – specified by the user. The second is Lox x for every $y….and calculate it accordingly. For example, if I say 0.01 for every $200….then it should round it down.. If the balance under $400…it should be 0.01… If the balance is $400 or above it should be 0.02… if the balance is $600 or above it should be 0.03 etc etc…. 

So the inputs will be: 

Lot calculation method= User specified or Proportional 

Starting lot size= 0.01 

For every $ = 200 

Lot size for the above amount= 0.01 

Fixed Budget of $30. 

Whoever can finish soon will and also confirms that they understand the above will get the contract.