Re: Tom Clancy themed game?
I think you are making this harder on yourself by using roll20. Don't get me wrong, I've been a member of roll20 since it was established, but in this instance I don't think you need it.
The rules can be written out and stored for everyone to see and browse using the Game Wiki that will be created when you make the game. As for battle maps, you could simply use a gridded image with coordinates to show the battle map.
If you still want to use Roll20 and Discord... I'm out. I'm here looking for Play by post games because I don't have the time right now to devote a couple hours to sit down on roll20 and discord with my gaming group, let alone commit to a pbp/discord hybrid game I would have to check in with ALL day long.