Hey, if this sub is going to be decent, you'll have to do some stuff.

For instance, rules are generally a good start, a couple of mods, maybe see if you can get affiliated with r/gatekeeping, and start low key promoting. Make a post on r/newreddit or whatever the sub is, get Automod up, even if it is just some basic functions. Start posting, because you need more than 25 posts to get into r/needamod for more technical stuff. Engage with the community, and also turn off text posts.