RPG Interactive Minecraft Experience {Looking for help!}

Alright guys, so I've had this idea boggling through my mind and I know it can be done. It required work, and truthfully I'm up for it, but I cannot do everything myself, so I ask for your help.

First of all, I'll get down to business, so I owned a server about a year ago, it was a medieval RPG server that people really liked because it was actual RP. And it became pretty popular. I then had some issues in the real world and quit minecraft and had to abandon the server.

Few months have passed and I'm much more knowledgeable what a person is capable of doing with minecraft without needing client-side mods, and the developers of Shot-bow Network have really inspired me to do things I've never done before.

So, the server. The server will be an Medieval RPG server. There will be 2 "types" of players you can be.

1. Guardian
2. Thief

Now both of those names are most likely to change, but it's simple.
A guardian will be the "good" side. And a thief will be the "bad" side.

There will be "subclasses" within the classes, as lets say I am a thief, after a certain amount of kills from behind, and tasks completed, you will granted the access be a "Assassin" which will be, lets say a stronger, overall more powerful thief in it's on ways(Just throwing that out there, that's not what I plan assassin to be completely). Or you can have the choice between Assassin and Rogue.

And yes, Rogue, there will be magic involved. Now, as one of the subclasses for both "Guardian" and "Thief" there will be a chance to learn magic. Now, on my server a few months ago, I was a noob and just manipulated plugins that were already made, so what I did, is I had to do a command to teach people magic, spell at a time. But now! Now I plan to add a system like this:

Once at the "Choosing point" of either classes you will have a chance to learn magic, magic will be difficult to learn and will take a long progress to be able to hit it's peak of power, although magic will have a lot of advantages, It will have it's disadvantages, now the only thing to do is to plan how I'm going to balance everything.

Now, BUILDING. This is extremely important to me, instead of just like MineZ where you're plopped into a world, and you just kill things and loot, here, you will have a chance to build and interact with the world. Now, this is EXTREMELY IMPORTANT TO ME, why? Because this is going to be it, this is what's going to separate this server, this experience, from any other. So what I plan to happen, is in certain area's in the map there could be "Logging camps" where the player is free to cut down the trees" or mines where they're free to mine (to a limit, though). And then there will be a place where players can build their own little thing, maybe there will be a limit to it, maybe there won't I'm still thinking how this will work. (So please BRAINSTORM!)

This isn't it, If I explain EVERYTHING it'll take a few pages, so, lets stick to this for now.

Now, I have faith in this project, and it can be done, we just need YOU, the community to help. If you want to become apart of the project, please post in the forum post if you'd like to be the following:

Plugin Developer: (The server can't be made without one, so it's NEEDED)

Web Developer: (Not much of an issue, I can make a decent one, but a skilled Web Dev would be nice.

Builders: (I personally call myself a decent builder, but we'll need more)

Terraformers/World Developers: (Must be skilled with Voxel or WorldPaint, This is HIGHLY needed)

Please include your age and skype, and any extra details that are relevant. Also, feel free to ask questions!