I think you might want to replace 'Aspect Ratio' with 'Magnification'. A search will provide simple formulae for magnification and focal length- try http://www.physicsclassroom.com/Class/refrn/u14l5f.cfm

Regarding your 1000mm lens at 1.6m, your magnification will be less than the 800mm example, but your bellows draw will be longer.

You have some nice lenses there, you'll get an idea about magnification by playing with them- a small window in a darkened room will tell you a lot about magnification and coverage...