Q1. Yes, usually the Prohibitions is kept pending by the officer until the BG is completed. You can call RCMP and get an idea about when they sent the prints to IRCC. (Number to call 613-998-6362) Usually the end to end process is about 4-5 weeks for IRCC Vancouver to receive and update the prints. So you might see some movement next week (there may be delays linked to the long weekend). You can also call IRCC and check if your security screening is completed and your BG will be marked as completed after both Criminality (RCMP fingerprints and security screening by CSIS is completed).
Q2. SCR is one of the fastest offices in clearing application so you can definitely see some quick movement after your FP is received by Vancouver.
Q3. While different agents give different info, I have had many people report that the agent said LPP was not started and they saw the LPP completed in the tracker the next day (due to the 2 day tracker delay, this means it was completed 1 day before they had called the agent

) so you never know. Having said that, yes LPP is pretty straight forward, if your PP days are comfortable, travel history is easily verifiable and everything else checks out fine, usually the officer starts and completes it the same day.