All of you will be happy to hear that I won't be having to ask any more questions about tripods, monopods or ballheads anymore because I finally had mine delivered today! Thanks to all of you for your helpful suggestions.I decided to save a few $$ and not get a Gitzo. Instead I bought an Induro CT213 tripod and BHD2 ballhead.
So far, I could not be more pleased with mydecision! I'm 99% sure I will never own a lens heavier than my 300mm f/4 L lens and this tripod seems to support everything just fine so the max 26.4 lbs doesn't appear to be a problem. I also purchased the short column for macro photography. I've never owned a carbon fiber tripod or a ballhead before so I have nothing to compare them to but for my needs, I couldn't be happier with what I have!
Again, thanks to all for the suggestions!
Denise