PPC Management

I'm looking for assistance in managing my clients Google AdWords campaigns.

This would be as follows:
- Campaign Setup (KW Research, Ad Groups, Scheduling & Advanced Settings)
- Weekly Keyword, Ads & Campaign Optimisation
- Remarketing & Google Product Ads
- Advising on Landing Page Improvements to improve Quality Score
- Pro-actively suggesting how the campaign can be best managed
- Monthly PPC Reports

I estimate this would be 0.5 Days work a week at first, with a view to expand.
You would need to keep an hourly log of your time and invoice monthly.

APPLICATION QUESTIONS
- Name a basic mistake most people make when setting up a PPC Campaign?
- How many people need to be a Remarketing list before you can use it?