Finally managed to build this monster, it took me 4 days, building the cabin was the most boring part for me but at least it looks beautiful, the dumpbed was really fast to build so no time to get bored, also the crane is really lacking power, like the clamshell style bucket that barely grab anything. As for his weight well it's really heavy and it bend when you grab it from both end. Overall it's great and totally worth the price only by the shear amount of time you will spend building it.
I hope Lego will make even more complex Lego Technic in the future.