Advice on Cash Management Implementation Approach

Context: We implemented ERP Cloud roughly 7 years ago. We are now looking at implementing cash management to automate bank reconciliations, and are curious how others have approached the cash management implementation.

Questions: Have you implemented one back account as a pilot before implementing other bank accounts or did you implement all the bank accounts at once? Is there catch up that needs to be done on the reconciliation or could it start with a certain date going forward? Are there any lessons learned, anything that would be helpful for us to consider?

Thank you!