SharePoint List & Workflow for Purchase Approvals

I need a freelancer to create a SharePoint list and workflow for managing approval of all types of purchases, from office supplies to rent and other services. The workflow should involve department managers as the approvers.

This will need to be setup on Sharepoint on Office 365

Key Requirements:

- Notify requestor by email

- Update purchase order status

- Forward to finance for payment

Drop down fields to lookup the manager requiring approval from a separate list which must contain the Department name and the Managers Name.

The workflow will flow to the following people for approval. If anyone rejects, the originator is notified an the workflow stopped.

1. Department Manager (lookup person from Department List)

2. Department HOD (Lookup person from Department List)

3. Creditors (lookup person from Department List)

4. Admin (lookup person from Department List)

5. Finance