The Weiand Team G is offered in a couple of different versions. Mine has a plenum spacer cast in, but they offer others. I dont' think they are really any taller overall than the dual planes. I like my Team G pretty well. Seems to be pretty decent distribution.
WIth that many cubes and 230s you would want a single plane I think. I use a Team G with my 230s and it worked out well. I also use 1206 gaskets, they fit the best. Had 1207's and they are HUGE. No need, and they are questionable around the ports as the intake sometimes will hardly cover it seems.