Migration excel to xero,QBO

I am looking for assistance with the migration of my financial data from an existing Excel file to Xero/QBO. It is expected that more than 500 transactions will need to be migrated. This is a complex project, so we are looking for someone with experience in the task. Not only do we need the data migrated, but we also require someone to create input documents for data entry into Xero/QBO. If you have the necessary expertise, we would love to hear from you.