your water usage is quite high, on my first cleans there were 2 of us and we were getting through 600L in a day.
The clx is light compared to fiber glass poles, that is what is started with, but i soon changed to s 22slx, it was so much lighter, but you do get used to using a pole, if this is your first day, then you will ache whatever pole you use, you body just needs time to adjust to it.