I was just thinking about it, and other than more trade management, I could not really find much against legging into this kind of spread, but I may be missing something. advantages: 1. More money ( from legging into the position, I can realize more profit, because I sell to open the short option when it is closer to the money and more valuable) 2. More "upside exposure" (because it is more valuable when I decide to open the short option, it simulates the stock moving higher and appreciating the value of the long call) disadvantage: 1. If I was wrong and the market moved against me, it would have been less of a loss if I had bought the whole spread at once because of the amount that it would have reduced the debit. Am I missing anything here?