Hello danzo,
the Plugin Field Cascade Dynamic is actually not made for that, but more to work in a submission or Search form to send data in the form.
For doing what you need, i think you must add a Ajax request on the "On change" event of the last "select" to get your link and then move to it.
In the Ajax request, you have to send all values of each selects in the cascade, create your custom link and then, on the return, jump to the link.
Hope it will help.
Regards.
Lionel