He will be 8.
It's not so much because she will get upset if she doesn't have anything...it's more because she will be a total pain and want to open his stuff and then play with it which will hugely annoy him.
I considered wrapping a couple of her own toys that she already has and maybe getting one small new toy to open in the hopes of distracting her from ds's new things!
It is such a difficult age gap and her birthday is Christmas Eve so she gets two days of heavy present receiving and then nothing for twelve months.
Would it be unfair on ds?