Make me a Spigot duels server in Java using the Minecraft Spigot API

I need someone to make me a duels (pvp combat) server in java using the Minecraft ([login to view URL] ) java edition spigot api ([login to view URL]). I will need source code but no redistribution rights. The server should allow players to combat each other in multiple ways. Some examples of the type of duels plugin we need made: [login to view URL], [login to view URL] , [login to view URL] . There is additionally an example of what we need done on the minecraft server hypixel.net. The duels plugin should be able to scale across multiple spigot server instances to allow for optimal performance. Note: This is not a website, it is a server addon for the spigot minecraft java server. The api docs are at [login to view URL] and the javadocs are at [login to view URL] . We can provide all messages, gui designs, terrains and similar, you do not need to have good english to complete this. I am able to amend the budget if needed to anything under $500. I am expecting the plugin to be tested and use asynchronous programming to allow for top performance. The plugin is allowed to use the following dependencies that are not in the core spigot api: Lombok, Google Guice, Apache Commons, and ProtocolLib/PacketWrapper (spigot library for protocol packet modification). The code should be easily maintainable and expandable after completion. The plugin is for the 1.8.8 version of the game with bungeecord as the proxy. Have any questions? Contact me.