do you already know that yarns can do sequencing?
you could get an happy nerding 3xVCA instead of those two seq's.
if you want to spend rackspace for multis get buffered ones, for passive multiplication just use stackcables or passive inline mults like those: http://www.upbeat.ch/shop/media/images/org/mult-patched.jpg

another tipp: get a bigger case than you think you'll need.