This is a line-up of my current youngsters. Formation would be either 3-4-3 or 2-4-4 in which an attacker in mid and a mid in def because I don't care the players' position in a match much.

As I buy 1 or 2 Q70 or around defs next season, it will look like below I guess. The position would be more likely 4-4-2, just see their Qs and avg. Q.