Exactly how much electrical work have you done in the past?
I find it hard to believe (and no disrespect to you) that a guy of your youth could be responsible for a job like this, permit or no permit.
Have you served your time as an Electrician?, considering that this is all fixed wiring.
I mean are you connecting to existing circuits or are you adding new circuits to a panel?
Has there been any allowance made in the Mains for the new expansion?