Hedge function for existing EA & Trailing stop for open positions if TP level is reached.

Dear all,

I'm new to, but learning, MQL4 coding. I've created a very simple EA that I'm quite happy with. But I'd like to pay for some help with a few more complicated (at least for me) functions. I really want to improve my coding skills so I'd appreciate well-commented code. That way I can learn.

Please note that this EA is only aimed at short positions

What I'm looking for is to extend my EA with the following:

1 - Hedging short positions

• I wish to prevent margin calls and negative liquidity/ equity fluctuations if a short position temporarily moves against me. 
• I'd like to profit from the hedge position if my short position gets stopped out and the price keeps moving up. 

Specifically: 

1. I'd like to have an input variable called something like "input double HedgeCost=10.0;"
2. Every time my EA opens a short position, I'd like a buystop order to be placed at a level of the OpenSell price + HedgeCost. In this example, the buystop order would be triggered when the bid price reaches 10.0 PIP's above the OpenSell price).
3. When the price moves down, I'd like the hedge position to be closed at OpenSell price - HedgeCost. And again, another BuyStop order should be placed, at OpenSell price + HedgeCost. So if the price moves up again, my short position will be hedged again.
4. When my short position is closed by Take Profit or any reason except Stop Loss, I want the BuyStop order to be canceled.
5. If my short position is closed due to a stop loss, the hedge position should be modified and a trailing stop should be placed at the exact level of where my short position got stopped out.

I think this is relatively simple. Again I'd like to learn how to do this, based on your code.

1. I'd like an input variable called something like "input int TrailingRange=3"
2. When my short position almost reaches it's TP level, I'd like an OrderModify to happen so that the TP is removed and a trailing stop loss is put into place at the TP - TrailingRange level.

Best regards,

Oscar.