You're allowed to disagree. you can take or leave my nit-picks. I didn't think your interest check was that bad, just discussing the topic in detail. I've hosted role plays on non-RP forums and I can always start the ball rolling in about a week with ten players. Maybe four or five stick around for the long haul, but you get the idea. It's not because I have particularly interesting ideas, it's just because I know how to name my threads and construct them. The people who want to just play can get started quickly, and the people who want to do the extra reading and fit just perfectly into the world have the option to do so.

At the end of the day, the interest check is a means to attract people to the RP, how it actually runs is all on you and your band of merry participants.

In regards to how much of the lore you've absorbed, I'm not sure it's even something I'd bring up. You're trying to show everyone this cool RP idea you have, people should know how serious you want to take this based on how you've constructed it. No point filling them with any doubts, you're either confident or you're not. Because you're leaving out all the main characters, it's not like there's a whole lot players have to be careful about.