Personally, I haven't done your trade both ways and tracked the results for lots and lots of trades, to see which method I prefer. So I can't really help you. But perhaps it is worth wondering, if you're trying to capture big moves by holding onto positions for a long time, whether it's silly to worry about slippage and commissions. Perhaps for big-move trades held a loooong time, S+C represent a negligible fraction of expected average profit. Even if the trade is rolled over numerous times, incurring commission each roll and incurring (small) spread slippage each roll. But I'm sure you've already thought about that and looked at the dollar size of some examples, either by-hand on charts, or in computer "backtests" of trading systems.
Maybe, of all the factors to consider when deciding between the two methods, S+C is one of the least important (?)