If you have time and patience then I could do it in my spare time.
Problem is I don't have a lot of spare time ;)
I'm busy with a website project from school so I'm doing alot with html,css,php and sql these days, so your project on that part should not be that hard for me.
Also the in-game part can be realized by adding the user to a database like sourcebans to control the admins.
Conclusion: I can do it, but I'm short on time so it's up to you to decide.
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No longer taking requests due to lack of time and interrest.
Only helping out with minor things through forum.