Using Cakewalk Sound Center with mulitple tracks and multiple programs

Hello forum, my name is Bart and I just signed up for my first question for Music Creator 6.
I use Win7 and a Roland GW7 workstation as an external midi input keyboard.
 
Due to the fact that I only can add 8 (max) virtual instruments I like to know if I do something wrong:
 
If I use the TTS-1 instrument, then I can add/insert one TTS-1 instrument and use 16 tracks, with 16 different programs (sounds) within that one instrument by inserting new tracks and assign them to (16) different channels. I choose the channels for each track using my external keyboard.
 
I like to do the same when using the CSC virtual synth. But it looks that when I want to use a different program on a new track I have to insert a new CSC synt. Since I only can add maximum 8 virtuele synths, that is a problem for me.
 
Do I something wrong or is it correct to insert a new CSC synth when I want to use a different program?
 
 
KInd regards and thanks in advance for your answers/tips.

Thanks Scook, I thought I missed some knowledge about CSC, but in the end it's indeed the limitation of MC6.
I will have look at SONAR.
 
Ciao!
Bart