Hey Ira!
To answer your questions:
1). In principle, it is possible to create a new content type that would be analogous to the existing “project”-type items, and a custom page template to display these new items, yet it is not envisaged by the theme and I would thus classify it as a customization work and have to charge a symbolic fee for that. In case you are interested, please send me an email to support@satoristudio.net.
2). Portfolio pages can be customized to display pages, yet all of them would appear on each portfolio page then. I am not sure why you need to link to a page instead of a project – what kind of functionality can a page offer that a project can’t?
Sincerely,
Andrew | Satori