I would also check with the charity that they are happy with this. I only say this as when I started out over 3years ago, I was giving all my profits to charity, a well known cancer one, and was telling everyone that was what I was doing on my FB page and my website. The charity were actually not happy about this - the reason being that in order to use their name with your business name is in fact down to their discretion, otherwise you can be seen to be trading off the back of it. I was told if I wanted to associate my business in any way with them I needed to sign a contract and be donating £50k+ each year. This was all about brand protection. It did smart at the time I’ll admit, but I understand where they’re coming from.
I still give to charity (it’s in memory of my sister who inspired me), but I don’t use it as a promotional tool. I just say 10% of sales to charity support by BBLB, and when I make a donation I will say which charity it has gone to.