Eveyone 13 and older on this board knows Brown won't respond to these type questions(no offense intended) BUT...
If pace doesn't MAKE the race,it certainly plays a role in the various scenerios which we need to concern ourselves with.
How the derby busts out of the gate is the only question mark I have in your list(the others I will gamble on or against).
Post position will allay most of my situational "what ifs",and statements such as Romans' will help me set a visual for entering the 1st turn.
One thing I stay away from is putting a line on all the runners...it tends to follow my own sub-conscious preferences into the equation.
Seeking out an underlay points out a discrepancy and makes a race bettable.Finding an overlay CREATES a betting possibility.