Congratulations.
Lol, It does sound like the servers at DAZ are getting slammed in order to have such slow downloads. Normally, if you can consider anything at DAZ normal, they have pretty fast D/L times for their content. I hope you will enjoy Carrara as much as I have and that you find it worth the wait! When you finally it installed and set-up, you will a pretty helpful group of people here to help you get started in getting comfortable with Carrara.