Input 4001.
I do understand the theory
and have studied it ad nauseum.
I also understand that if one has not delved directly into the extreme ends of possible combinations
INCLUDING extremly low weight stuff, the practical aspects are often. disregarded.
In full scale aerobatics and in the wildest military designs
the generally regarded "rules" are pushed beyond what has been taught as the practical window for usable design.
EXAMPLE
Most new fighter designs will not fly without a computer which can predict and correct the NATURAL and NECESSARY instability of the design.
In the little super light foamies -,again , the envelope of weight/area and vectoring power confound the generally accepted parameters,
In full scale unlimited areobatics - the designers and pilots are trying to emulate the flying capabilities of the "foamies .
simply put : low weight is the holy grail and power is never enough.
However , the guidelines you presented are well worth knowing for many current designs.

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