Hello, fellow EUBers

. Im playing bass for 6 years now, and i also owned an upright, but i sold it because of transportation issues. Now im going to start working on a EUB, which will be designed by me, but constructed by luthier, with my help ( to decrease costs).
It will be 4/4 or 3/4, not yet 100%, it will have 4 strings, and piezzo/magnetic pickup combination. Now, id like to ask you, how to make EUB, so i can get sound like this out:
http://www.youtube.com/watch?v=yMmPb4qHlCM
This is sound of an old Framus TRiumph bass with single coil magnetic pickup, but i used same pickup on my Upright, but it didnt have sound like this.. Ill use magnetic only for Folk music.
Thank you!