Auto-calculate pending order lot size, free margin check

I have two hedge EA that show a low drawdown in Strategy Tester but on live accounts the drawdown can easily be 3 times greater. Is there a solution to this? I am thinking the widening spread in the live accounts may be the cause. So what I would like is to have the lot sizes of all pending hedge trades auto-calculated and dynamically change while in the pending state, if necessary, to be ready to open based on the current spread value.

The external parameter will be:  extern bool  AdjustLotSizetoSpread = true;

I would also like another parameter added to the two EAs:  extern bool  CheckForFreeMargin = false;

If true, the EAs will only open additional hedge trades if the account free margin permits.

Finally, in one of the EAs, the HedgeProfit is calculated in dollars. If set to $3, all of the hedge trades will try to close at $3. This reduces the profits for multiple hedge trades with very large lot sizes. I would like the HedgeProfit to be calculated in pips so that if set to 30 pips, two hedge trades with smaller lot sizes can still close around $3, but four or five hedge trades with larger lot sizes will close around 20, 30 or more dollars.