OK, let's distribute the vis for the first two years. The income for each year is 8 pawns, which means we have 8 to distribute--since there are three member magi, we can round off to 9 and distribute 3 each. Since 7 pawns of income are from Techniques, I suppose there's nothing wrong with taking two pawns each of those. How does this sound?
Gregorius: 2 Rego, 1 Imaginem
Viola: 1 Rego, 2 Animal
Tasia: 1 Rego, 2 Terram
Scott