Looks like you did everything correctly. Just, to make sure, once the server is started and you are in the Admin Center, you did bind the correct Studio project to the server (in the Nuxeo Connect sub tab) ?
In the "Update Center" tab, got to "Local Packages" and check if you see your Studio project. You should see it and only one (plus the other Nuxeo packages such as DM or DAM for example)
For users and groups, in Studio, if you want your users to be created in the server everytime you update the server, you must set the "Creation policy" to "Always", because once a set has been created, the colums exist so they are not re-created.
For Documents (you don't see the schemas in the UI), could you just go in the degault domain, open "workspaces", and create a new workspace. Once in this workspace, click the "New" button: In the creaiton dialog you should see your document type.
