Word press expert to manage a website

I am looking for a word press expert to look after the day to day issues of an upcoming website. He must know the in and out of word press and to solve various errors and optimise the website for better performance. Please quote your monthly expectations as this is going to be a long term job. website: https://localhouses.co.uk/ . Please mention the work and optimization you are going to do on first month and the maintenance tasks on following months. I am looking for a detailed report. Thank you