Oh gosh if you ever want me to TL;DR at you I could probably fix the "know virtually nothing about Chrono Crusade" bit. But it might turn into I know WAY too much about Chrono Crusade now, lol. But yeah, the Echoes should be...interesting! I've only ever played him post-manga, where he's mostly recovered from the insanity caused by the horns, so I'm a bit nervous about playing him once the horns come into play!

I don't think Anthony and Joshua would know each other from church--Evangelical churches are more Protestant than anything, so religiously Joshua and Anthony's parents would probably have a lot of theological differences. Joshua canonically likes to read a lot, though, so they might be at least casual acquaintances at school?