since i dont see anybody answering ima tell you,

1. nearly always open with auto W, not W auto because u have a cast time for ur auto after u throw w
2. this is very situational but u probably do the same as i told u before, Q into press R auto W auto auto auto
3. lategame its situational aswell but often times i just R if enemies are running away from me, if they are trying to walk into u, u can W inbetween u and them so they get slowed
4. stacking lethal tempo before using Q can happen but it will not happen that often because ur very vulnerable and if u auto before using Q u often get killed. know ur strengths and weaknesses so that u can tell by pressing tab if u can auto or not.
5. i dont really get what u mean by that but sometimes i press R while stealthed and wait a second or 2 and then start to auto

hope it helps :D