Hey, Adam
The kit will be on it's way today, went to the post office Saturday, they closed at noon. Being new to OM SA, I feel compelled to go over 1 point in particular. Always load the cylinder with the hammer resting on an empty chamber. I would advise getting some snap caps and practicing this. In it's current configuration, the firing pin is not visible when the hammer is full down. When the re-conversion kit is installed, the firing pin protrudes and rest against the primer when hammer is down. With the cylinder out push the hammer in, you will see the firing pin protrude even further.
To load, insert 1 bullet, skip a chamber, load the other 4, the cylinder should be on the empty chamber when the hammer is released. Practice this until it becomes second nature. You probably already know this, but now I feel better about it!
There are some stories of old-time SA carriers putting a rolled up bill, 1, 5, 10 dollar or whatever in one chamber to remind them when loading of the empty chamber, and if they needed a little ready cash, they had it as back-up!
Enjoy, and be safe!