two points that I would have added for Yun
First (and I don't know if its the actual name for it) A bow shield. You see them in ornate elven bows, where they have this diamond shaped metal plate along the top arm of the bow with the top stretched towards the end. It is more than just decoration, its also because it is instinct to use whatever is in hand to stop a weapon coming at you, and that whatever is in hand is usually a bow. So an armored section to protect the bow from damage in such instances is added (also makes the bow look fantasy cool)
Second, is his/her arrows. I can see using the bomb enchant on them. Maybe even having a small secondary quiver. Either enchant each arrow and stack them into the repeater arrows from early on, or make the repeater arrows and enchant them afterwards. You'll either end up with an arrow that explodes with the force of ten arrows, or an arrow that explodes and reappears in the quiver sans 1 (problem, that one arrow would be the only one in its special quiver to prevent any other in the quiver from blowing up, otherwise all bomb arrows would need to remain in the inventory when not in use). If that doesn't work because spells don't enchant onto material like that, a gem arrow might work: an arrow with a gem arrowhead or an arrow with a short string at the end tied to a spell enchanted gem. Might be a good idea in the future for those long range bombings