How would I use a Table as a global cross tmm variable to be CMP compliant?

According to this article you can and since your class is not static it should be ok?:

Can I modify a class real-time with my iRule?

Technically, yes. Once the configuration is loaded into memory, you can technically modify a class with TCL's list commands. Doing so, however, not only converts the data in the class from an efficient, hashed format into a simple list format, thereby slowing down queries; but the changes made are also not permanent, as they cannot be written back to the file that stores the class data. This makes the changes effective only until TMM is restarted. In general, there is usually another way of structuring your code to avoid this that would be preferred.