I have an old 2050 running 7.2.6.1 which has been decommissioned in favor of new equipment running 8.0.2P4

I would like to redeploy the 2050 at a remote office as a flexcache volume of the new filer to improve the quality of life for the folks working remotely.

I don't see any reason why this would be a bad idea, but is there anything I should be aware of when putting a flexcache volume on a filer running 7.2.6.1 (I am going to put the latest 7 code release on it before it gets deployed) in front of a filer running 8.0.2p4?