How will you deal with charging? As far as I know connectivity has been a solved problem for over a decade now (on a small scale you could always just get a consumer SIM and use that), but power consumption is a problem. This is why Tile trackers for example use BLE tags and nearby phones instead of just embedding a SIM in their trackers.
The baggage only needs an infrequent duty cycle, right? Like once an hour should do the trick. I don't think I have to attach a large enough battery that I need to not put it in luggage. If it doesn't work out it doesn't.
