Hmmmm. did you check the location? It's across the pond.
Why not have a word with Thompsons, who are in this country, supply Pyle drivers, were sugested by someone, Oh look, 4 hole compression drivers, what a coincidence.
and although dearer, are higher rated, and a lot louder. Now whether you will need extra loudness in this area, I don't know. I do know know that I bought some very cheap ones for a project, which work superbly, but just aren't loud enough. We're in " suck it and see " territory here, sadly.