You can apply for a new US passport or passport renewal and a US passport card at the same time. This is a convenient option for frequent travelers to have both a valid passport for air travel and a passport card for travel to these destinations by land or sea.
As for when you should use a Seal... use Master Seals on non-promoted classes at level 10 to upgrade them, and Second Seals on non-promoted classes at 10 to switch them over to another class tree (mostly worthless, though switching characters that have access to Mercenary, such as the Avatar, over to it ASAP is generally a good idea), or to switch a promoted class into another promoted class at level 15.
Versions of the calculator. * depending on whether your programme of study is classified over penultimate and final years only, or Years 2, 3 and 4. For Integrated Master degrees with a study abroad variant which is not included in the classification average, Calculator 1 may be appropriate. Please check with your school first. Translate any marks awarded on the 0-100 scale to the 20-90 scale.