you can take some help from FEATURE PARAMETERS for autodimension (not all features but still ...)
For auto order (distributing it properly) use DISTRIBUTE ANNOTATIONS.
yes i guess that is correct (lmtools also directs in that direction) ...
Probably a drafting expert can throw some more light on it.
You need a license increment called "nx_drawing_auto". From what I'm reading it looks like this is available in the following three bundles:
NX30130 - Drafting Plus
NX30173 - Drawing Automation for NX
NX10105 - NX Mach Power Drafting