I'm almost certain that Jagex do not implement bans on users within one hour of them breaking the in game rules, I would ideally think there is a delay of around six hours.
The reason the third Rock Crab crawls away is because you can't kill the "group" of Rock Crabs around you fast enough, I would highly suggest Sand Crabs over Rock Crabs as this problem will not occur. As mentioned above start with two Sand Crabs & when your account is ready to efficiently kill more within a "group" I would suggest investing 10,000 gold into training at Crabclaw Isle.
The script does allow for these features to be implemented... However, I personally re-stock potions & start a new game by hand, my accounts currently last up to 3.5 hours each dream.
Make sure you have Java installed & updated on your machine, If your java is updated then right click on the file and select "open with"... You should get a list of programs that you can open the file with, One of which being java, by Oracle.
UPDATE: Day 20 progression has been added to the thread.
NOTE: I've spent some time updating the threads layout, hopefully the goals & objectives are a little clearer.
UPDATE: Day 15 progression has been added to the thread.
NOTE: I will now only be updating this thread every 9-10 days due to progress slowing down, the accounts will now be at nightmare zone to complete their melee based training.