You DO NOT need to have Gridcoin Wallet RUNNING on the same computer as boinc if pool mining.
In the point 4.: One should not be removing (Aborting) any tasks, as boinc will auto-download more tasks as you do this. It is easier to just remove PROJECTS. (Some projects prefer you to first set No New Tasks, then Abort all, then Update the project and then Detach, but this procedure is too complicated)
To third bullet after point 7.: You do not have to Synchronize twice. Hitting the Synchronize ONCE after finishing adjustments on grcpool is more than enough. In fact, if you have a remote computer, you do not have to click sync at all, it will sync automatically after few hours.
To the point 7b: The red triangle and warning message is purely cosmetic. The red exclamation mark will stay there until you get some credit from the project and the Pool software executes it's internal project synchronization.
I suggest users to take a BREAK at this point and THEN check on the warning again.
Also you are earning interest even when your wallet is offline. You are just not getting it written to your account (thus no compounding. To get the accrued interest, you must go online/unlocked at some point stake.
Anyway, Good guide.