The EV system mentioned above is mine.  Concept using the pro driver would be the same.  I use a plate amp on Alpha.  The EV is cut at 200 using a passive 2nd order filter.  The Fostex uses a single cap with an L=pad.  I really need to take them apart and finish them. They have been in temporary wired state for over a year.  The plate amp I am using is the cheap Parts Express 70 watt unit which isn't up to the task. It hums.  
Any how, my advise is to stick the your drivers on a board and see how they sound.  I think you will be pleasantly surprised. 
Bill