TigerMoth your questions amaze me!! Not sure if it is the naivety of structure or just your inherent belief in the right to ask them in the manner that you do!
But to answer the salient points:
I have a few dozen Chipmunk hours and can say that the controls are probably the most harmonised of any light aircraft. I only have 32 different types in my log book so I am not a real judge but I can categorically state that the controls are far more refined than the Pitts' that I currently find myself in. Certainly a thousand times better to stick and rudder than the DH82.
Solo front. Pilot front pax rear or stude front instructor rear
When flight planning I work on 90 kts at 1950rpm and correct for head/tailwind when airborn and subject to actuals.
Hard to fly - all I will say to this is that if you can fly (ie - have a licence) then with sufficient training you should be able to fly almost anything. I find it a delight to fly and am always happy to ferry a friends example for him.
Landings are benign tailwheel but I must confess that I do not click up three notches of brake as per RAF Op notes as a prelanding check.
The one that I am used to appears to be more restricted by oil consumption than by endurance! The ring mod allegedly costs circa £18k.
Stik