I want to white label a network wtih no ref to WP anywhere.

I want to white label a network wtih no ref to WP anywhere.
Questions:

1) Is there any issue re WP licensing that you know of... I am thinking not an issue.

2) Can I get rid of WP related paths?
for example the path to edit a blog post is domain/wp-admin/edit.php
Can I change this or hide it completely, with a plug in? with advanced tricks?