You can't beat handling a camera before buying. All the spec in the world won't mean a thing if you are not comfortable with holding your camera. Moving from Point and Shoot to DSLR will also have its issues for you, but nothing that can't be dealt with. In the old, old days, most of us started out with rangefinder cameras until SLRs came on the scene. Some refused to use anything other than manual because that was what they had been used to. My advice these days would be to book in to a beginners college course to understand the basics of using a DSLR and then to get out and use the camera as much as you can. Oh, and of course, ask as many questions as you can, both here and as many photographers as you come across. And above all, read as much about the craft as you can absorb.
Enjoy!