Using Dev Licenses for 6-7TB POC

I want to test throughput on a Splunk setup, but I will use a Dev 10GB license, but the traffic will be nearer 6-7TB per day. I know this will go over the license limit, but I only need to test for around 10 days. I have 4 dev Licenses. Will Splunk continue to work if we just use the 10GB licenses, adding a new one every 5 days? This is a proof of concept of the hardware? We need Splunk to continue working with all its functionality during the 10 days. Any information on if this will work is very welcome. Thanks in advance