I could use a little help and advice from the photographers out there!

I'm very interested in getting into serious photography, but at this point have nothing but a couple old point-n-shoot cameras.

Let's say I have $750 to get started with. What would you recommend as a good starter DSLR camera and what equipment should I look into with my first investment? One of my favorite things to do with photography is macro shots...so I'm thinking I'd like a macro lens to start with. But I can also see the great potential of a good zoom lens as well.

I'm looking at a Sony Alpha A290 because it is priced very reasonably AND has good reviews. I could afford both the camera and one additional lens and a few smaller accessories. (carry case, memory cards, etc)

Thoughts, suggestions or advice???