I think that 4 hose is too much. How many people will you usually have to smoke your hookah? Just because KMs are not auto-seal hookahs, so the others should always plug the end of their hoses with their fingers while the others would like to puff. Or if you don't have that many hoses on your hookah, than you should plug the free hose ports with something. I think this is the only question, you should consider about.
On the other way this hookah is georgeous, I absolutely think, you will love it. I have a trimetal myself too and it's fantastic. So In my opinion, there is no problem with the hookah itself, but with the number of the hoseports
But it's your decision, you know what you want; I just say to think about it again