Man Vanity Fair after C&P is such a good choice because C&P is so relentless. VF made me laugh quite a bit, though it's still heavy subject matter.

I love Dostoevsky but I think adapting him is hard. I've never seen an adaptation of C&P I like. (Kurosawa did an updated Japanese version of The Idiot, though, which is my favorite Dostoevsky book, and it's pretty good.)