Answers should be self-explanatory. If you select "Other", explain in a comment

As for subscriptions, I am thinking yearly ($10, $20, $30) for Bronze, Silver, Gold. Or monthly ($1, $2, $3) for the same levels. Any left over after the hosting fee would go to Steve. I'd most likely include a special ribbon that shows under your name on posts and such as well as a special group.
As for Patreon, I'm looking at that too, with the same levels and caveat. Anything after goes to Steve. Though it seems to be more for content than a subscription type thing.
As for numbers, 39 gold yearly subs would cover the costs with a bit to Steve. Or 32 monthly gold subs would do the same. Of course, any one-off donations would still be accepted.