I understand the way you trade. Indeed one of my trading strategies is similar.
My point was simply the amount of contracts that you might eventually hold. The nominal amount could be v large in relation to your account. In other words the leverage could be huge. For (an extreme) example, a $10k account holding 10 contracts of crude oil has 64x leverage. Would you be ok with such leverage?
I trade through spreadbetting so my money calculations are simple. Contracts mean nothing to me I'm afraid and I've no idea what 64x leverage means for management of the trade.
When I open the first trade, say in oil, I set a stop-loss behind the entry price which will get me out for a set % loss from my account capital. Many people use 2% so let's say its 2%. On a £10k account that would mean a £200 loss. I'd be very comfortable with that. As I haven't ever used contracts I don't know how different your process would be from mine.
Are we maybe talking about different types of capital lost? I am only interested in account capital lost. So every trade on which I am stopped loses £200. But if I have 7 overlaid trades on oil, only the latest one's £200 loss is from account capital, the others' losses are from unrealised gains. On 7 trades that represents a potential total loss of £1400 obviously, but the gains from the earlier trades more than match this so I don't worry about that, the net result is considerably more profit than holding the original trade alone over the same price action.