Might check out the dt10/16 from predator, it's a dt10 body with dt16 bill. Will get the smaller profile bait down deeper. I'll have to get me some of the cb12 blanks I haven't seen those before.
I have a few of the DT10/16 and they get down below 12' easily. They're slick sided with no scale or gill texture so the details have to be done with paint. Still a very nice blank. In my opinion the shape of the DT blank is more in line with a bream or crappie, whereas, the CB blanks are longer and thinner more like a shad or minnow. Either way both of them paint well, regardless of shape or pattern. If you PM me your address I'll send you a set of the DT's...6, 10 and 16 before you place a big order.