Actually, I was goofing on you saying midrange speakers lacking midbass. Sort of like saying tweeters lack midrange or bass. Oh well, so much for my weekly ribbing.
Mauibuilt, if you are going to set up your own custom components, you ought to look into using raw drivers and having a custom passive crossovers made/spec'd for your particular install. You will most likely save a bundle of money and end up with something fantastic sounding.
Look to these sites for the drivers/crossovers:
http://madisound.com/
http://www.solen.ca/
The fellas at this forum really love talking about DIY components. Educate yourself for free here:
http://forum.sounddomain.com/
Finally, the CDT crossovers you have may have compensation circuitry, et al.. that are geared for a CDT set. Using other drivers may not give you the best results.