Good said: 

The issue is not the host, it's my search function is coded retardedly.

 

I am adding categories to the software anyway, but you can choose to use them, or not to use them.
They will look as they do on a forum like kivi.

 So the front page will have all the categories listed, you choose the category to go to a section with posts i that category. Would we have the "new posts" area as well which compiles posts from all categories to look at in one area?

Will the chat box be on a separate page from the categories, or still be at the top of every page?

Each category can contain posts and you have to click it to open it, then you see the posts. A category may have posting disabled and have sub categories that have posting enabled. That way the one with posting disabled is just a title category for the others. Ofc you can have posting enabled and still have sub categories.

 

There will not be a new posts section, at least for now.

 

The chat will always be at the top.