Microlearning Copywriting US ENG to UK ENG

We have a project for copy editing, transitioning from US English to UK English. The content involves microlearning (approximately 10 minutes in duration). We will provide you with the online link to access the content for quoting purposes. Additionally, we will provide you with the following materials for the actual work: text on slides, a script for voice recording (to be recorded in UK English), a job aid (a downloadable document), and for the video, both the on-screen text and the captions.
Please provide your hourly rate for this task. Upon reviewing the provided link, you can estimate the total hours required for completion. Furthermore, we require an estimated turnaround time to communicate to the client. We need to establish a timeline with the client before initiating the project.
Before sharing the project files, we will need some company documents signed.