U should do somethin about the noise. Over may hours or days, it could drive u psychologically nuts if u keep enduring it. It is not healthy to endure this 24/7 at home.
Wat u need is stronger fans and maybe some high density rockwool to block the noise so it does not harm your health. Well, GPU noise isnt so bad compared to asics. So, sound wise, u may be ok.
Consider underclocking the gpu if it gets too bad. Besides air-con, there is nothing much u can do. However I dont think adding more air-conditioners are worth it. It may be better to just underclock in summer.
What do you think of this set up? This potentially could host 9 rigs, or 18 if i do two rows. I would be moving around 3000 CFM in. I haven't decided yet if i need to do the same on the intake, or just use negative pressure. I would use those extra input on the bottom and point them outside.