I've used bulk loaders for about 40 years, currently I own 6 of them, with 5 in use right now.
In defense of Marko, when I was his age I did exactly what he proposes. Money at his age, is an extreme luxury, or was when I was a teenager/young adult.
I have used the generic plastic re-loadable film cassettes from different sources, they have their faults, but they work, are cheap, and, who cares.
Stephanie, you should get 18 1/2 rolls from a 30.4 metre roll (100'). The first time I bulk load a new type of film, or in this case an old film, I do two 6 frame rolls and test the film. This should leave you with 18 full 36 frame rolls to play with.
My own experience with quite old Ilford HP5+ and FP4 & FP4+ is that they do age, but generally speaking they will work very well.
I have this year finished a roll of HP5+ that I bought new, with an expiry date of 1989.
Mick.