By all means do that, but remember you’ll need the same 75% (minimum) vote in favour in order to amend or repeal the existing By-Law, and that even chipping away at bathroom tiles and any similar activities that involves common areas of a Lot and more generally (such as moving materials about in the carpark or in an elevator) additionally requires the prior written consent of the Owners Corporation, that if granted could impose different hours of work under the provisions of the Strata Schemes Management Act, which of course would overrule the By-Law.
Also consider that any other Act of Parliament, as a “superior law”, would overrule your Plan’s By-Law, including the Protection of the Environment Operations Act which limits noisy works on Saturdays to between 8am and 1pm and prohibits such works altogether on Sundays and Public Holidays.
Frankly, I’m surprised that the preamble to your Plan’s suite of By-Laws doesn’t state that they’re limited by the provisions of any and all superior laws that may from time-to-time apply!