I've built an image for the WPN824N that runs 17.01.7 with no issues. You can upgrade directly from a previous version of OpenWrt using the sysupgrade .bin file.
This image includes LuCi (GUI), IPV6, SQM, and PPP. A build manifest is available in the download folder.
If you end up installing, please let me know how it works for you. I don't have a WPN824N to test it on directly - but it runs great on my identical hardware, the WNR1000V2.