Cable design you can do.
First you will need to read this page, do not worry will will then put a XL file up that will do all the hard number crunching.
I had fair results for the designs I did for TQ so there is no reason you can't.
We will describe all the TQ design one at a time and the compromise that need to be taken the material etc.
So let's see who is interested hands up.
Also read this and try it.