Dude I don't know where you're located or what the climate's like, but I lost over a pound from my best plant last season due to mold in a similar situation. I went out to my spot one weekend and found beautiful huge colas that needed a week or two to finish. I went out a very rainy week later to find nearly everything decimated, all the colas rotted from the inside out with mold.
It's up to you to watch the forecast and make a decision, but I would strongly recommend you take your densest colas right before you leave and get them hanging. When you get back you can trim those up and jar em, and go harvest the rest.
Good luck, they're looking good!