ES,

My opinion is that the TP and SL is based on all the open positions (floating).
Percentage of the account for each is determined and entered into the EA before the start of the progressions.

EX: Staring balance is $10000
Take Profit set to 2% of starting balance (all open orders would close when this value is reached)
Stop loss set to 1% of starting balance (all open orders would close when this value is reached)

Please explain if there is a better way. My initial start would be .1 lot with an increase of .01 lot for every next trade set at 10 pips.

Thanks, LCFX