the edges I have used always sound a little clunky...
im not convinced such a heavy drum provides much variety in its sound.
i was convinced a 13"x7" was my dream drum, but it just sounded choked, kinda boxy.
this is my experience with all of the 6 we currently have at my work...
i think for a similar sound but with more colour, go for a solid shell dw 13" x 6", i saw chris dave using one and it sounded amazing!