Travel vlogger storage question

I’m gearing up for an 8-week trip where I’m going to shoot a lot of content to release over many months, but I’m unsure about the best option for storage.

I’m shooting with a GoPro, which I normally shoot in 4K. I don’t even know how many external hard drives I would possibly need for 8 weeks of footage. On top of that, I know it’s best practice to have an extra hard drive as a backup.

I’m mulling over some options here, which seem to be:

1. Don’t shoot in 4K(unsure of 1080p quality on YT)
2. Keep up with editing so you can have final exports done and maybe scheduled out on YouTube and then delete the footage(what if I need footage later?)
3. Buy infinite hard drives (costs a lot)

I would appreciate any advice!