Simple Grid Martingale Robot to code but with a newly calculated Closing System

I have a requirement to code a simple grid and martingale Expert for MT5. 

There are no entry criteria needed or any complex indicators required, this idea is based purely around an auto buy and sell system with money management. 

Simple adjustable inputs from the interface are:

-Grid spacing - Starting lot size - Profit Target - Risk factor 

The martingale lot sizes have all been calculated up to 15levels all with 10 different starting lot sizes. 

Closing the positions, some will be directly and other positions will be closed partially in a set ratio from each grid level, all of these calculations will be provided in order to be able to code the EA. 

This should be a very simple EA to code with nothing that is too complex, very simple ea.