Develop brand identity based on existing logo

We are looking to develop brand assets for our organization. We have an existing logo and we would like colors suggestion and development of the following items:
- Business Cards
- Letter Head (including the content grid) (Word format)
- eMail signature (Word format)
- Social media Covers (LinkedIn, Twitter)
- Social media posts template
- Powerpoint presentation template (Cover, an internal page, section page, chart style, table style, etc..) - Please see attached file as we need something similar developed with our identity for these elements (we will provide the PPT for the attached after awarding) - all drawings should be SVG not bitmap or JPG for editability
- Document cover template

Please show us a sample from your portfolio and we may ask for sample files to check for the editability