Since my wife and I both shoot, and both have a habit of occasionally editing each others' photos, we treat each job as a unique Lightroom catalog. Somewhere along the line, I learned that if I open up LR, then create a new catalog in my normal LRJobs folder, and then go INTO the folder created by LR for said catalog, and put the originals in there, I can happily move that job folder around and never have to rediscover the path to the originals. In other words, for a job SAMPLE, I'd end up with a directory structure like: /home/peety/LRJobs/SAMPLE/Originals/Card1/blahblah.CR2

For our recent cruise, I've set up separate jobs for each day, and two days actually got two if not three separate jobs per day. That makes copying the jobs to separate drives easier. For an upcoming Sports Photography Workshop I'm attending, I'll build LR jobs per event before flying to the city, and create my Originals folder thereafter. As I ingest the raw files, I'll put them directly into the Originals bucket, and let my scripts sync the jobs over to multiple HDs on the fly.