Hi. Don't worry, this is my last suggestion. After this, I'll stop spamming the forum. :)
A suggestion for the markers sometime down the road? Perhaps consider TRIANGULAR grip marker cases! One of the reasons Copics have such great control is due to their oval-like structure, allowing a steady, comfortable grip. It would also set the markers apart from others, especially all those cheap square "touch" markers. I have some Faber Castell "Grip 2001" triangular grip pencils and some Staedtler TriPlus fineliner pens, and they are by far the most comfortable to hold of all my writing instruments.
Obviously I'll still use Ohuhus if the ink quality is good, regardless of their ship. But it's just my 2 cents. A triangular grip would be extremely comfortable, have more stability in the fingers, and feel like a more premium product.