your post doesnt quite make sense.
you say that you get drag behaviour on cold transmission at low rpm
at the same time you say that you need to push the pedal further to shift to 3rd ratio - that is backwards, pushing the pedal further will induce kickdown and hold ratio longer - your trans wont shift till engine reaches a higher rpm.
No creep in R when hot but good in D
its quite vague honestly - but have you checked for binding brakes?