Just thought I'd update you guys, I just gave it another shot after giving up a couple months ago, and this time using the same combo of CM13 main and CM12.1 based SFOS 3.3 did, in fact, work. As of now I am unsure why it was not working properly when I tried previously, and as far as I know I didn't do anything differently. One thing I'd like to note is my camera and flash are non-functional in this version, but I'm honestly just glad to finally have it running. Once again, thanks for your help!