I would suggest get some good players as starting 5 and get at least 2 decent players as substitutes. And always try to study your opponent before setting up tactics for a game against him.
Example: As your opponent plays/scores much from outside so up your defense as 3-2 and he uses much defense on inside so u try to dominate him from outside.
The main thing is try to read your opponent tactics by his 4 5 previous games and after that set your tactics.
Cheers!