Going to agree that that is some pretty hair you've got going on, but I can also get what you're saying about the weight of it. I had hair down to my waist at some point (it looked bad, I do not know why I didn't see it), and it would drive me nuts with both its length and weight at times, cutting off 20cm felt awesome. And yours is all curly and looks thicker than mine was, sooo.. Maybe trim it a bit, but not too much, like Nodaisho says.
Hm, I could've sworn Caleb posted about his hair here? Anyways, I was going to say to cut it shorter, so I'll just add that, even though I feel like I've maybe dreamt the whole post?