Main consideration I have when adding additional FVPR is the effective date on the FVPR refers to the date of the revenue arrangement. Depending on your Accounting Preferences, the date of the RA will be today's date OR transaction date when the RA is created. If the preference is set to Transaction Date can lead to an unexpected outcome if the RA get backdated to the prior year. NetSuite will also throw an error if you have multiple FVPR's that overlap on their effective date range.
Other than that the import process / setting dates is as straightforward as you outline.