Custom Terrain, Custom Teleportation Mechanics, Giant Functionality

Minecraft version: Latest Spigot

What I want:
Anarchy server customized plugins for a survival experience more difficult than default.

Overworld:

• Spawn is an amplified desert extending several thousand blocks. Bordering the desert is a massive, several layer thick, bedrock wall extending from bedrock to near height limit. Players must get over this wall in any way to venture out into the world. (Water and other fluids not placeable within the wall, that is the only exception). You can tower up or use past players' towers to get over the wall.
• Out in the world there is amplified terrain of all biomes (spawn being the only desert).
• World borders are at 500k in each direction, giving a decent area to build but keeping players somewhat close to one another.
• Mobs generally harder.
• Mostly night/longer night.
• Giants spawn in the spawn desert, difficult to kill. Drop eyes of ender used to light end portals. (So players will come back over the spawn wall to fight giants for end access).
• End Portals are found in strongholds that are near spawn. To light use eyes of ender obtained from killing giants.
• Nether accesses removed entirely

Nether: Removed Entirely

End:

• End Travel has a large ratio to overworld (16-1 or 24-1)
• Accessed through end portals near spawn.
• No center island, end portals take you to their corresponding coords in the end (/24 or /16 because of the new ratio).
• Islands further apart (more void space).
• Dragons spawn randomly throughout the end. (Rare and much more difficult).
• Gateways to the overworld spawn on islands throughout the end. It will take you to the overworld coords (x 24/x16 whatever I decide).
• When coming back to the overworld, you will fall in instead of coming out of a portal (portals will not generate when you come out of the end, so if you want to go back into the end you must either head back to a spawn or craft an end gateway)
• Killing dragons gets you an item that allows you to craft your own end gateway that can be placed at your own base to get to the end. The gateway must be activated by an eye of ender, obtained by killing a giant.

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When I'd like it by: Jan 2018.