No, that will not be enough, as the patch is not aware of the existence of your object yet. I'd call a function with defer_low() from your new method, and from that function output what you need from your outlets. Or, even better, you can implement the loadbang method.
Uhm, I'm afraid it's something I recall from the doc of the Max 4 SDK - which, although outdated in some parts, still contains some very useful info and presents the whole thing in a way I tend to like more.
Anyway yes, that's how you should declare the loadbang method. On the other hand, be aware that if the loadbang message is sent to thispatcher, your object's loadbang method will be called.