Dobanion, dozing your Green Sands lot should work out got you ok. Regrowth there will mostly be in the form of grasses and baby Christmas Berry. A quick mowing with a weed wacker should handle it when you return. Guinea grass is common in the area, so be sure to buy the big shindawa weed wacker so you don't burn out the motor.
Green sands is dry. Don't be surprised if your plants don't survive if you leave for a year. So try starting with some cheap plants in case you lose them. Or better yet, pay a neighbor to water them once a month. Going with drought resistant plants might be a good idea. And wind resistant too. Lots of wind here in Ka'u.
As for camping, not uncommon in Green Sands. As long as your neighbors don't mind, then you should be fine.
Green Sands is a "cheap" area of Ka'u, so it draws some of the odd people. Some are really colorful characters and wonderful people. Regretfully it also includes some dishonest types, so watch your stuff. If you leave your tools and camping gear on the land, it may grow legs. Best to befriend a neighbor to store the stuff for you.
BTW, if you had posted on kauweb, I would have seen your question and answered it. Yes, it's an infant site but people are starting to learn that it is there. Surely not actice like punaweb, but someday it will get there [
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