just so you know, iPhoto and iTunes (if set to "copy items to library when addiing") will do just that.
The original files are alright to delete after it has imported everything. Deleting the as you go helps keep it clean.
Personally I don't like iPhoto at all, I still manage photos manually in folders myself. I see no point in using iPhoto, and I do not know why others use it although I'm sure they have their reasons.
With that said, what ARE the reasons you use iPhoto over just manually storing them in folders/subfolders yourself?
Perhaps someone can enlighten me to something that will spark my interest and convert me into an iPhoto user.