It would be great to have commentaries of the hadiths. It would be helpful to get some contexting understanding of the hadith rather than just the words of the hadiths alone.
It's easy to misunderstand if there is no scholastic explanation or commentary.
Fath Al-Bari: English Commentary of Sahih Bukhari By Ibn Hajar is an example of such a work that you can include in the collection.
May Allah bless you all in your efforts in both worlds. Ameen.
Some resources found online:
  1. Sahih Bukhari
  1. Riyad-us-Saliheen
  1. Forty Hadith of Al-Nawawi
  1. Commentary of various hadiths: www.hadeethenc.com