Snoop

You'd be fighting for members in the sense that the people would have to pick between the orders, and they would most likely go with the clerics as they're already established and have a playerbase. I'm not trying to dissuade you, I'm just warning you it'll be difficult for you to get a new religious order up and running.

Octavion speaks bloody true words, the make or break time of a guild is the first week and a half, if you're struggling from there its either drown or disband.

Or you can get some friends to assist in starting it.