I'm a bit of a downer when it comes to fructose. Basically for me, if it contains fructose, you can wash away all of those other benefits. No amount of positives justifies the fructose. I eat fruit but I don't see it as health promoting so even if it has nutrients, I would call it a treat and not a health food.
Hefty amounts of fructose (more than 15 grams a day perhaps) and low carb diets don't go well together. I think that Grok ate a few berries and some crab apples with lower fructose content. And the sugar in coconut water isn't very much.
Within your own self-imposed fructose limit, go nuts (or coconuts). I'd probably go for the water or some fruit though. Fructose is fructose is fructose.