Do you really have so many ships that you are not aware in which one you have which modules?
Is it really necessary for you to transfer a complete ship just to switch a module?
As far as we know, this can get REALLY expensive so better hold modules in the ship where they should be, and a module you use on more than one ship, hold it in the module storage.
Than you can transfer just the module so that it will get cheaper.
I'm hoping that i have it right in my mind that we will get module storage/transfer too.
Otherwise this advise is just crap