Name of the plugin you want : PvPingMobCoins
Spigot Link : http://www.mc-market.org/resources/4726/
Price : $5
How it would contribute towards the betterment of the community : It's 25% off, so it's a good snag!
Name of the plugin you want : Skyblock WorldEdit
Spigot Link : https://www.spigotmc.org/resources/skyblock-worldedit-unique.46686/
Price : $7.50
How it would contribute towards the betterment of the community : Helps us poor people out
What you do is rename it to spigot.jar, and put it in your main server directory. On Multicraft; you set the jar to spigor.jar, and start your server. Once your server starts, stop it. There should be a new file called mca.conf; where you can set the ram, jar, and player slots :)