I also like the idea of doing a piece for 4 pianos, or 2 pianos and 8 hands, because my friend is grade 8ish piano too, and so is my music teacher, so it would be fun to play something all together.
If you can think of any other good combinations, i'd be greatful! I also have a friend who is grade 8ish flute, and her brother is grade 6 alto sax, and loads of my friends are about grade 5/6 flute, and i also know a grade 8 viola player, but she also plays violin to about grade 7/8.
Thankyou!
Jacob.