SICP is a great and mind-expanding book; but I came to it fairly late, at a time when (I think, I hope) I was already decent at "elegant" programming, so it's hard for me to say if it'd help you program elegantly. Probably, but I don't think that's one of its chief concerns.
On the other hand - HtDP is explicitly focused on teaching you patterns of thought that will help you create well-structured programs. It's also significantly easier, so I'd recommend it for your purposes full-throatedly.
On the other hand - HtDP is explicitly focused on teaching you patterns of thought that will help you create well-structured programs. It's also significantly easier, so I'd recommend it for your purposes full-throatedly.