If you're just eating real food, and you have the appetitie to eat more of it, then you should be fine. I'd just say keep mixing it up in case some of your food sources aren't as clean as you'd like.

When I was ultramarathon training and eating that much, I was just making sure I hit the right percentages of that macros protein, fat, and carbs. When you eat paleo and you eat that much food, there is little room for error in getting the right micronutrients. Of course there's the caveat of not getting enough Vitamin D3. To which there are several previous posts that hit on the RDA of Vit D3. And if I'm not mistaken, Vitamin D is a fat soluble vitamin to which you COULD overdose on. But after reading recommendations of taking in 10,000 iu's of D3, I wonder how much you would have to take to trule O.D. on the stuff.

If anything, it should vary by kg of bodyweight, not caloric intake, though I suppose a faster metabolic rate would cause many processes to move more quickly and thus require more raw materials.

The good thing about an evolutionarily-informed way of eating is that since you're eating Food, as your caloric intake increases, so too does your nutrient intake.

I believe minimum RDA is based on 2000 calories. I don't know how it scales if you eat double the calories. I don't think it does really.