I'd suggest TPT, it would be faster and efforts to setup that up is not much too.
Also, if your tables are going to have the same structure from one project to another, you could parameterize the database name in your fastload/mload and use something like an envionment file to keep the actual database names. So when you call your script using say, UNIX, it would run for the database name mentioned in that file. When you need to change the project, all you need to do is to change the database name in the file or create another file with the new database name. No need to change your load scripts.
I'd suggest TPT, it would be faster and efforts to setup that up is not much too.
Also, if your tables are going to have the same structure from one project to another, you could parameterize the database name in your fastload/mload and use something like an envionment file to keep the actual database names. So when you call your script using say, UNIX, it would run for the database name mentioned in that file. When you need to change the project, all you need to do is to change the database name in the file or create another file with the new database name. No need to change your load scripts.