1. Actually to achieve that you need to big customization on several file (css, html and js), you may need to hire programmer to help you. You can read our Support Policy right here http://support.jegtheme.com/support-policy/
3. I’m not quite sure what you mean with the absolute height?
4. On those page (http://www.woutervanderwolk.com), may i know which template that you are use? Because footer only available on Landing Page template or Portfolio Extended layout. Before you can use it, make sure you enable Footer option on Jkreativ Dashboard > Footer for landing page and Extended Portfolio > Enable footer for landing & portfolio.