Generating reporting on a custom made many to many relationships

Hello, I am experimenting with the possibility of relating Accounts to Custom Object 3 by using Custom Object 5 as a record in the middle. This way, I can distinguish between the type of relationship between them.  For example, if CO3 is all known "Software Contractor Workers", CO5 would be called "Contract Worker Employment," and would contain specific employment details for each Account to Contractor relationship.  For example, start date or hourly rate. While this may not be the best way of doing things, it seems to work at the moment, but my problem is I can not figure out