I had been using the LG G3 ChupaChups ROM v.3 for sometime. Just a note, the kernel on post #3 cause problem with VPN connection on my phone. A newer version is available here
Been using it for a couple months now, some overheat and full CPU usage once in awhile. Try at your own risk.
Unlike the CloudyG3 2.5, ChupaChups preserves the LG Software Center, which would allow you to update LG built-in software.
For All three ROMs, the Xposed for Lollipop (and previous Alpha/Beta versions) works fine without any issue.