That way you will see which players should be in the first eleven and which ones will sit on the bench or play in the reserve team. This way you can find some very good young players. Don t use all your time on the tactical part of the game, focus on the formation your team will use. For example try to see which strikers work well together. After about 4-5 matches you should have a good feeling about which starting eleven your first team will use.
Big clubs don t change the starting line up often.
If you only have 7 of the players you want for your formation your really want to use, then buy the rest. Its better to buy than to patch up the starting line up with bad players. Before the league starts your team should play at least one more friendly. This time against some good opposition. Use your best starting line up against them.