Can you add the plugin called "Hasteyboys" to the plugins window? It makes it so your tools get efficiency 3 and unbreaking 1 when you craft them. It would be great because then people on the server will have more time to do stuff (If it's like a minecraft UHC) because you're on a time limit. And it would be really helpful if you were to mine obsidian. Please consider. 
SUB HERE→→ https://tiny.cc/kevinplayz