I'm trying to decide if 64gb is enough for me when buying the iPad Pro. I used to draw a lot when I was younger and I'm planning on buying Procreate so I can live out my creative side again, but on digital. However, I don't plan on becoming an artist. It's just something I enjoy doing in my spare time. How much space does each file take up? For instance, a detailed b/w drawing of a human or a fully colorized painting of the nature with many details. I dont wanna feel limited to only having room for 50 drawings... any heavy Procreate user that can inform me how much storage it takes up with 150+ paintings? Im really disappointed that there's no 128GB version. I think that wouldve been ideal.