I'd say yeah, they'd probably get along and have the occasional little bickering matches that really aren't all that serious from time to time. All in all it sounds good. Scarlett seems to thrive on proving her guy friends wrong or pointing out flaws in their logic. Should be fun, though, to see how they bounce off each other.
Sounds good on the Charlie front. Though I have a feeling we may discover that girl has a temper with the constant calling her Charlotte. lol.
Aww! Poor Caitlin! She's not gonna even know what to do with them...
Anyway, as if it wasn't obivious, I like the ideas :) And thanks :) I'm sure I will! You're welcome :)