If you're only using one installation of mojoPortal on the server a single installation license is sufficient. If you're going to use multiple installations of mojoPortal on the web server then a server license is what you should get. If you need to install it on more than 3 servers then an Enterprise License would be more economical.
Form Wizard Pro creates its own set of tables (during setup) in the same database used by mojoPortal. The tables are: