CMS - Script Modification

I'm currently using the Content Management System known as Jetbox, it is located at [login to view URL] Please familiarize yourself with this script. If you bid, and I accept you, and you need to learn it still, I will not be too happy. For now, I need four modifications, some are actually modifiying the script, some I think the script itself is very capable of. Regardless, they should all be very basic and pretty easy. If you do a good job on this project, I will 100% for sure use you in the future for project relating to this script. Here is what i need done, the lingo is in direct relation to the script, so to understand it, you must familiarize yourself with the script prior. First to create the ability make categories that can be used within the default page section. The links section for example uses categories, I would like the pages category section like that. New pages made, should also have the option to select no category. In the admin panel, there is a form to add new pages. I need this form to be available to regular viewers to submit the page, which then has the status as waiting for approval in the admin panel. These pages should be submitted into the pages section. I then need the pages to have a comment/review feature, this is seen in the blog section of the website, we just need to apply it to the page section. Lastly we need to enable the backend for the user management, this is already integrated with the website, it has just been disabled in this version, when a person registers, and then logs in we would like there to be a link to another submission page similar to the previously listed one, that just sends it to a different section, but is still waiting for approval. I'd also be able to edit what users see after logging in. I look forward to your bids.