Ask yourself: WWZD? Immediately start implementing the website. Negotiate with them for as long as possible, so they don't hire outside help. After promising

Ask yourself: WWZD? Immediately start implementing the website. Negotiate with them for as long as possible, so they don't hire outside help. After promising them (verbally, no written communication) to start working on the website, don't do any work. When they ask about progress, be evasive. Launch the website, owning 100% of it. Profit.