I did the exact same thing with my Paradigm Monitor 9 speakers -- except I attached the speaker wires to the top (treble) posts.

A little birdie once told me that if you're not bi-wiring your bi-wireable speakers, you should always connect your speaker wires to the top (treble) posts. Why? Because the treble is more susceptible to cabling issues (e.g. loss of detail/clarity) than the bass. I guess the theory goes that the connection (using the original plates or a substituted wire) between the top and bottom posts is like a splice and that any joint between cables can cause degradation of signal.

This is just what I have heard and I do not endorse it -- but I followed the advice anyway because it couldn't hurt.