Migrate our data from Dropbox to Teams/Sharepoint

I have 261GB of files stored in Dropbox in one folder with many subfolders within it, which we use for business purposes in a small team of four of us. We have Microsoft 365 licenses and have started to use teams for meetings and messaging. I am interested in moving our file storage over to Microsoft and looking for someone to support on a project basis to do the following:
- advise on the best solution using Microsoft 365 / Sharepoint
- migrate all our data and the full file structure from Dropbox to Sharepoint (assuming that's the best solution)
- set up the link from Teams to Sharepoint
- access four PCs remotely to set up teams within them.
- provide a very brief written guide for new user set-up

Please provide a fixed price and timeframe for delivering this service and explain similar services you've provided in the past