1V1 renked/unranked plugin

I have seen many plugins like this however none really fit to exactly what i want I need a plugin that does for example unranked or ranked random duel with/duel [player] that opens a gui where you can choose between ranked and unranked. It needs and ranked system of some kind. when you win a ranked match you get points and if you win from a person with higher points or rank you get more points than someone who has lower points or rank. It needs an option to do unranked games. I want players to be able to play ranked matches and unranked matches i would also need to be able to reload world and generate its own arenas based on a schematic of some sort similar to the sky wars plugin.

Ideas for commands:
- to duel a player: /duel [player]
- to leave a match: /leave
- to create arena: set region of arena and do /create arena
- set position: /arena spawn1 and /arena spawn2

Ideas for permissions:
- /duel [player] permissions: allow.duel.player
- to leave a match permissions: allow.duel.leave

When i'd like it by: Well its a big plugin but i want it a fast as you can make it