Saent, if you are using a Nikon, this should be the lens you get...
http://www.nikonusa.com/Find-Your-Ni....8G-IF-ED.html
It has a closer minimum focus range, 1.0 feet as opposed to 1.7 feet. It also has Silent Motor Drive. Both of these features help when you want to be using your acrylic box.
It was also awarded the TIPA Award for Best Professional Lens. You can find that on the link.