Finally you won xD
no... think that, if at the end you decide to play with a 4-3-3, you can have 22 players, so, you can do 2 teams of 4-3-3. at now you have 4 ST, and well, is your team and you have to decide, but, in your case I prefeer to sell Duy Nam. Duy Nam for a ST.

If you do friendlies, too, try to put a different player in the corners (the same in the 2 corners) because, sure you have one player that shoots better corners than the other. the same with fouls. Sure there is a player well programmed for these positions.