Things seem to be rather flexible around here! I have all the parts for the 19, the two good amps and a tube or SS crossover. So hey; why not? But at the pace I move it could be a while, and of course I am easily sidetracked, like a kid. Bi-amping is not the panacea it is put out to be in my opinion but I need to try for myself. My system is Darwinian in nature; it continuously evolves.