How much water to cut in amateur fight?

[Ground Beef]

I'm currently 6'2, fairly lean at 184. My coach said the nearest weight class is 175. To get there I would need to be dropping almost 10 lbs. I can cut 3-5lbs of fat to get REALLY lean, but it wouldn't be enough, and dropping 5 lbs of muscle is just way too much, I would feel too weak to do anything. I'm wondering how much water I could realistically cut on fight night as an amateur? Would 5-6lbs be alright?

I'm in Ontario, Canada and looking up online, I can't find any org with weightclasses at 175, nearest I could find 178lbs, next class being 200lbs, so I'm not sure if he remembers correctly. He said after 175, it's 185+ which is BS in my opinion.

[Trebuh]

theres 178 weight class and then 201 so if you can cut 5lbs of fat then you shouldnt have problem making 178. Since you are asking about weightclasses i guess that you are pretty new to the game of boxing so i would suggest just get on a good diet and try to make the weight without draining yourself. Theres no point cutting weight in amateurs, you fight to gain experience.