The expression "coked to the gills" is an expression that means the person is very intoxicated, either on alcohol or illegal drugs.
Basically twice means 2 in these sentence twice means more than he earn in short words he wants to say that he wants to earn more than he is earning now
for example someone is earning $500 every month so he want to earn $1000 every month
I'm sorry, but you forgot to provide the paragraphs...
He is eager to look through the trunk and impatient most likely because he is riffling through the trunk
