For the macro lense I would go with Tamron. They are significantly cheaper than leading brands and perform very well. As for the camera, what do you consider average? Do you have a price range in mind that you are looking to spend on a camera?
5-7 with a lens is a tough one. I have a Nikon d90 that I got used on ebay for 800 a couple of years ago. I think that Nikon has a few new cameras that would be in that range without the lens. I haven't checked but they have a 5000 line that should fall right in there. Maybe you could go to a real camera store and tell them you just want the body and the lens. Give them your price range and see if they will help. Here local we have Bedfords. They are great at beating prices. Heck they even price matched a used camera on eBay for me do you never know what you can get sometimes. I went to a local photography meeting and the speaker said "Never pay retail" and since then I haven't
Sorry. I'm tired and I ramble. I love Nikon other people love canon. Your best bet would be to get with someone that has a camera and mess with it to see if it's what you want.
I recently picked up a D3100 as my first dslr. It is a good starter camera. I already wish I would have gone with the D5100 though.
I've yet to pick up a decent macro lens. I've been trying to find a used Tamron 90mm. They are hard to come by though. In the meantime I picked up some extension tubes which allow me to take some really nice shots up closer to the glass. They will also come in handy for when I do get a macro lens.
I had a d3000 for a little bit and once I got my d90 I quickly realized how much else I could do. I loved my d3000 until ingot ahold of something better.