5000 payloads with different combinations - ReadyAPI

Hi Team,

Please advise will there be any performance issues, if I process 5k payloads with different combinations and permutations (production like data), using ready API. 

Scenario:

1. 5k + payloads will  be stored external to ReadyAPI - XML type

2. one payload size (2k + lines) - XML Type

3. Response - 1.5k + lines; (JSON Response)

4. Payloads will be picked one after another; (Production type data)

5. Validate only 5 fields in the response 

Expectation: Validate if the output from the new system, as per the old system. 

Note: This is functional testing. So, this task not related to validating the load;