It would certainly NOT require the modules to be assembled in a particular order, as all of them would be same and interchangeable. That's the whole point of this design. At most, you'll need a propulsion module for every few of them in order to power the assembled modules. It may take a while to disconnect/connect them, but it'll be much quicker than sailing/towing a damaged ship to port for repairs, and certainly much quicker than building a replacement carrier.
Also, the goal is not to reduce the susceptibility to enemy, they would almost certainly be MORE susceptible to enemy fire; the goal is to make them expendable so you wouldn't mind losing a couple or a dozen. They'd have no catapults, a fully-automated landings/takeoffs system, no offensive weapons, no hangars, no radars, and only CIWS for self-defense and communications modules to coordinate movement.