.Ken - Is there a reason you don't mention 16awg speaker wire? That's pretty important stuff. In fact we never use 18awg for speaker lines. (even though many people do) I'd say 80% of out installs are 16awg and the rest of them 14 and 12awg. Generally in the theater and what not with the lower gauge.
I'm guessing it would be another expense for the product launch that you don't need at this time, and I know we could just use 16 to 14... right?
When the money starts to come in, I'd seriously look at adding the 16awg to the lineup. I hope it goes very well for you. I'm assuming you'll be at the CEDIA show in September? We all have to plan early and stay late.