Adrian what you have here is a tripod that is trying to do everything for around $400.00 Canadian. Without the centre column raised it is 4.5ft. high and with column raise is 5.5ft tall, when the column is raised there can be more problems with shake, you might not feel it but the camera will record it is doing likely anything slower than 1/30 to a second, I lost about 2 hours worth of shooting because of that, as I was on a trip there was no way I could go back. This is even more so with a tripod that will allow you to tilt the column over the centre to the side with a camera on you could off balance the tripod and over it goes.
I am adding a like to Really Right Stuff which has an excellent write up on what to look for in a tripod, I do not suggest that you purchase one, but use the right up to get a good understanding of what to look for.
http://www.reallyrightstuff.com/Be-a...sing-a-Tripod/
Jeremy (JR1) also posted and excellent posting on tripods well worth the read.
http://www.canadiannaturephotographer.com/tripod.html
Cheers: Allan