Hedging EA for account protection

Background:

I am running some martingale EAs which are profitable but have a potential to blow up accounts when market is trending in the opposite direction. One way to avoid that is possibly a hedging EA that hedges against open positions with floating loss when account drawdown (DD) reaches a certain percentage. The main purpose of this EA is NOT to take profit from hedging (although the EA can set a profit target optionally) but to save account equity during the deep DD period while waiting for the market to turn back. Very little profit or even a small loss is expected after hedging is auto closed at breakeven. However, this EA may allow me to manually close the hedge positions (if there is a need) and then auto re-open hedging positions if DD is still beyond the threshold level. In one word, keeping DD controllable and account safety is the what this EA is mainly intended to do.

Specifications:

1. Hedging will automatically start at/after a specified symbol-based account DD percentage level, or at/after an overall DD percentage level.
2. Hedging size must be based on the corresponding original position size, and it may be splittable.
3. Each hedge position is opened with a mandatory SL and an optional TP. There is also a mandatory Hedge Threshold, passing which will set the SL of hedge position to breakeven.
4. Hedge reopening. Two input values control when to reopen hedge. One input is Hedging Interval in Minutes to prevent hedge positions to be opened too frequently. Another is Hedge DD Level Incremental which increases the symbol/account threshold level in case hedge positions close in loss repeatedly. 
5. New original positions may continue to open after hedge starts. Hedge positions for new original positions should be automatically opened.
6. If not manually closed, the hedge positions will finally be automatically closed at breakeven or at the SL. If they are manually closed, they should be reopen automatically to prevent account from further drawdown.
7. If any original position is closed (either by EA or manually), then the corresponding hedge position(s) will be automatically closed. The hedge position(s) here include both positions in Hedge Protection Group and positions in Hedge Profit Group. If the positions were split before, all split positions must be closed.
8. A simple panel is required to show information like current symbol/account draw down in percentage, original lot size, hedged lot size, and also buttons to manually open and close hedge positions.
9. Testing. Hopefully the EA can prove it works as expected in backtesting.

Note:

The above specifications are simplified. I have all the detailed explanation and examples for every aspect. However we may further discuss about the design and logic, if there are flaws and errors, to make the EA work perfectly.

Experienced developer is welcomed to work on this MT4 EA. If it works well practically, I will ask for a MT5 version from the same developer likely with the same price.