Well, you will need to create fields if the correct type for each column.
The easiest way to get the fields created would be to import some records just to get the fields built, then you can delete the records.
Some of your fields are probably calculated fields, so you would not import that column, but instead make a formula field in Quick Base similar to what you may already have in Excel.
Your issue will be that these will need to be uploaded along with a new column for the Related Lease Agreement. That will need to be added manually before uploading unless you have some kind of lease agreement identifier on each record that you can use. I would have to understand you data better to give you more specific advise.
The Related Lease Agreement is the Record ID of the correct lease for each lease payment.