Beth,
I trust you have a great tripod; I see it has a great user review rating. That reversable center post is real handy as you say for copy work. Mine achieves the same result with the center post pivoting to any angle (upside down too) as needed.
I did not mean to flame any war, only to offer a link to a product I was completely satisfied with and willing to stand behind with ample experience.
I will admit, you have a better Slik than the ones that failed me.
By your recommendation or mine, I don't think Kim could possibly go wrong.
Kim: As Beth says, If at all possible, visit a better camera shop that has these tripods in stock and play with them with the weight of your camera attached, before putting your order in. You will find what meets your needs that way.
Peace, and a Happy New Year,
Garth