How about some instructions?

The problem now is of course, the not so little problem of exactly how does one go about it? There is the aerodynamics and structural considerations.  Searching the Internet, some good reference texts and examples turn up.  I especially like the free links to resources on certain uni websites.

Many years ago when I taught flying, one of my then students was at Sydney Uni studying aeronautical engineering.  They were using a series of books collectively called "Airplane Design" by Jan Roskam.  Apparently it was common for the students, to refer to these texts as "the cook books".  It would seem that the formulas in the text were based upon the empirical data collected from groups and classes of certified aeroplanes, developing statistical norms for these groups and such the development of formulas that closely predict performance based on those norms.

My goal for the VLT, is to have stable, standardised flight characteristics, in line with every other light twin I have flown.  I do not want to end up with a design configuration that requires any level of extra special pilot ability to control.  Using the Roskam texts should encourage a conservative design, consistent with my goals.