He was googling Audi Q7 prices on August 9th. A top of the line model retails around $69K which is about the same as his Anadarko annual gross salary. I think it's very possible that he thought Shanann's thrive income would continue on autopilot and he could woo NK in high style once he did away with his responsibilities. IIRC Shanann's parents were the beneficiaries of her thrive income. Not sure if that is still the case.