Oh, nevermind. I just saw that the hull size of the ship dictates how many officers there can be and that officer space beyond that is ignored. Guess I use one of the officer cabins for something else then :/

Yes, Scout Cutter is 4/24, tied with many other small hulls in the 4/24 equivalence class.
Consider the awesome Battle Barracks 3 for your 24 crew

Traveler Hyperwarp Drive does free up 1 (S) Officer Cabin to be anything else.
Alas, you have only 3 (M) slots, and 2 of them are earmarked for Bridge and Hyperwarp.
Then you can't squeeze all officers and crew into (M), like real ships can

Still, it's fine for a 2400 mass ship.
Allistar Liner (2400 mass, 2/5/10 slots) has a doesn't-fit problem,
so 1 of its precious slots must be a Mass Reducer anyways, and that's a different not-fun.