Need Help:

Lost Cup final last season because I did not make the right adjustments - don't want to make same mistake:

This Cup History:
VS Very Defensive 4-4-2 with higher quality goalie and slightly higher quality defenders.

Won the first match 2-0 switching my usual 4-5-1 (V) to a 3 - 1 - 2 - 3 - 1 Went aggressive - mixed passing - whole pitch - no counter attack - using off side trap until 2 -0 then brought AMC back for forth defender, put back arrows on my DMC and went half pitch to hold for the 2-0 win.

Note, I made the swtch from the 4-5-1 (V) reluctantly but because his D had only let in one goal in two games and I felt I needed more attacking.

How would you reccomend playing the second leg tactic wise, its an away game.? Any help is extremly appreciated.

Thanks