Changes to a website

This is potentially a three stage website updating job.

Stage one I definitely need done asap: please let me know any info you would need to access the site and do the job in your reply (I appreciate the site may be in a difficult format).

Stages two and three I haven't decided on so please only quote for stage one (but feel free to let me know in your reply roughly what you'd quote for 2&3. Summary below and full description in the attachment).

Stage 1. Basic changes to my company website (replacing existing text with new text that I will supply on 4-5 pages, adding an ‘accept cookies’ popup on the home page, swap a new pdf file for the existing one that a URL links to)

Stage 2. Some further changes of a similar nature that are less important at the moment

Stage 3. More radical: change the entire site to html with a proper page structure and a CMS, whilst keeping look and feel