I have no idea whether or not you'll like the high school stuff in BTVS more than I did. Seasons 2 and 3 are the heart of the show for most fans and after that the painfully boring Angel character departed for his own show. But I found the whole thing to be kind of stuck in that Scream-era hipster-Goth-ish mode and not in the way that I like. It just wasn't that fun. Certainly the first season is pretty trite.
Yeah it wouldn't kill you to see CITW. But I don't know what's "goofy" and "weird" about A:R--fill me in? It was both dull from a horror point of view and as an action movie...Weaver was good though.