Hello,
Is your timelapse being generated as a video right now? because I can use the official google api with a tiny .net app in the raspberry to do what you need in about 1 hour... but if the timelapse isn't being created as a video, that might need some extra research (maybe 2 hr).
Also it depends how much babysitting you need, to setup stuff, etc.
Greets!
Erwin
PD: I noticed there is a town with my lastname in Austria! (Ried) and my father had a very weird "family" shield... but supposedly it was from his granpa in germany :P