I need a virtual assistant

Hello PPH People,
im looking to engage a virtual assistant, initially for 2 hours per week, increasing weekly to approx. 15 hours per week.
duties will include full email and calendar management in the cloud.
I am in the middle of setting up a call handling system to manage the calls from my businesses, the VA will need to receive the email transcripts from the calls, action and reply by email when they are able to, (with my guidance). the VA will also be responsible for booking appointments for me to see clients, both by email and direct call, ( No cold calling, just responding to enquiries)
the va will be required to undertake research projects, design and print, the creation of forms etc. ( The VA does not need to do this themselves, they are free to engage other professionals and just manage the process.)
The VA will be responsible for the typing and editing of documents to correct my appalling literacy, The VA will also be responsible for tasks such as contacting suppliers and negotiating for the best prices;
im sure there will be a learning curve as myself and the VA learn to work with one another, and tasks my change over time.
I have no idea on budget, so have just put £20 an hour.