audit.log with logrotate on CentOS

Hello, I am using CentOS-6.7 and I have implemented the audispatch configurations and they are working pretty nicely. One of the requirements I have to satisfy, somehow, is 7 years retention of logdata. That is an enormous amount of data to store on /var/log/audit filesystem - even for a single server and 6 workstations combined. I have a 2.0TB sized filesystem in place already - but it won't be enough to satisfy the retention of 7 years of data. So, my plan is a tiered approach to managing the log files if someone could please advise on how best to implement the following: Rotate log files every single Monday morning at 12:01am. When I rotate them place the dateext extension (for example 20160523) to indicate all date is up to that date extension. When I rotate them, I also want to bzip2 compress them (I have the binaries on the server). Only keep at most 15 of those rotated (date-string extension applied) compressed files so that I can once a month take over a DVD burner and burn the files to DvD; however, I want to ensure that the files never grow any larger than the size of a normal (not dual-layer) DvD media which is typically 4.70GB (so I am estimating a 4.0GB limitation) that is after rotation and compression. Can someone help me figure out how to most appropriately (and more importantly) and successfully implement this configuration? Warron French, MBA, SCSA