Most likely your storage door will be the 751 keyed locks which look like this google photo...
The moveable TAB can be bent fairly easy by just inserting a large screwdriver under the door near the lock and pry up. The TAB will bend very easy.
Once the door is opened then you can remove this type of lock very easy and replace it.
There is one advantage of everyone having the same the keyed locked is you will be able to use your neighbors key if you misplace your key.
These doors will not be secure with almost any kind of lock you come up with if someone wants to get inside it anyway...
All of our valuables are kept inside my truck when we are away from the trailer. My truck has the keypad for entry so this is also where I keep my duplicate keys for the trailer.
Roy Ken