EA Based Stochastic K crossing and % based Order Entry and TP SL like Oanda. -Need Source Code

Hi, I need two Eas based on 6 things. The same strategy - one is buying and the other is selling 

1. Entry Based on Stochastic K crossing input

2. % Leveraged Nav Entry (Explained Further and with images)

3. Take Profit in percent terms based on price of entry 

4. Stop Loss in percent terms based on price of entry

5. Max 1 Trade at a time

6. Do not place trades if the spread is too large. (Can be left as input)

I am used to Oanda Calculating my Units, TP, SL. MT4 uses lots for orders and pips. There are no options for trading a percent of my account like Oanda. Also, pips mean nothing in terms of percent. I am trying to get an EA that I can use across different currencies that will calculate order size, TP , SL, 

Goal - I want an EA that enters based on the Stochastic K crossing above an input. 20 for Buying. 80 for selling.

The Ea will not exit based on the Selling condition if Long. I want the EA to Automate my entries only for me except for TP and SL exits.

Expanded from Above: 

Key Components: Buy and Sell Version Needed Separately **** I need source code for both.

1. Stochastic Entrance:

Buy Entry: Enter when k crosses up over input(20)

Sell Entry : Enter when k crosses down under input(80)

     2. % Leveraged Nav Entry

% Leveraged Nav Calculation

Starting Balance = $100,000 (Needs to automatically get balance) Balance is the account balance not including ongoing PnL. The balance that only changes when you close a trade.

Leverage = 50 (Need as Variable I can Input because Margin requirements differ from currency to currency or if automatic that would be better)

https://www1.oanda.com/resources/legal/united-states/legal/margin-rates

Total Available Capital = $5,000,000 (Starting Balance * Leverage)

*** For Aud/Usd the Margin requirement is 3% or 33.333

Price Of Unit of Aud/Usd = .69531

Formula = Starting Balance * Leverage (Leverage for Aud/Usd is capped at 33.333 in the USA )

100,000 * 33.3333333 = 3,333,333.33

% Leveraged Nav = 2% (Need as an input shown in images)

3,333,333.33 * % Leveraged Nav

3,333,333.33 * .02 = 66,666.66

66,666.66 / Price of Aud/Usd =

66,666.66 / 0.69531 = 95,884 shares

Order for 95,884 shares is placed at market. (Shown in images)

    3. Take Profit Exit in percent terms based on price of entry. Need to be able to be changed. 0.2% percent based on price move of the currency not account balance.

Take Profit = 0.2% Limit order

Entry Price = .69531

Example Buy Trade:  (0.69531 * 0.2) + 0.69531

Example Sell Trade:  0.69531 - (0.69531 * 0.2)

    4. Same Thing as #3 but for Stop Loss. However I need to be able to take the stop loss off completely. Need to be able to be changed. 2% percent based on price move of the currency not account balance.

    5. Max 1 Trade at a time.

    6. Do not place trades if the spread is to large. (Can be left as an input)

Example = Aud/Usd (3.0)

No Trades placed if the spread is larger than 3.0

https://www1.oanda.com/forex-trading/markets/recent?instrument=AUD/USD

After back testing. I want the EA to be able to automate my entries only and only take profit for me. I still want to manually manage my trades that is why I want to be able to take the SL off and only have entries not exits based on Stoch K. 

Any questions feel free to ask. I have the script written in Pine Script for tradingview.com. I do not know any MQL4.