First, welcome to talk.maemo.org. I also use the Nexus 5 for a long time as daily driver. Same as @claustn, I am still on the CM12 base, mainly because af Video recording, but also because I am just lazy, and my CM12 configuration is running so smooth. There are some things to mention. The last running version of SailfishOS on the CM12 base is 2.0.5.6 Haapajoki (@claustn: correct me if I am wrong ;-) ) You will also have to add a systemd service to enable bluetooth low-power-mode (see next post). I am on my way to switch to the CM13 base, because a lot of apps I use have been upgraded and are no longer compatible with SFOS 2.0.5.6. So I have to use the old versions. Also I cannot remember having recorded a video with my cam... :-) I hope you enjoy your Nexus 5 running SailfishOS.