one plus 3 high chip tournament strategy

Four tables, 7 players, one player plus 3 high chips from all tables advances. Three sessions like this to provide 3 tables of 7 players for semifinal. Two players from each table plus one high chip advance to final. The Wong book does not cover this type format. What effect would the first round format have on money management strategy? $500 in chips, $10 minimum, $500 maximum, 20 hands.