Strengths
Your team has a lot of quality.
Your team can play through the flanks or through the middle, giving it some adaptability.
Weaknesses:
a. You have two out of position players, which will create a -10% possession penalty. At low levels, your quality will overrun most opponents, even with 2 OOP players, but towards the end of the champions league (level 4 or 5 and above) it'll catch up to you.
b. This probably isn't a great main formation, since it has two very noticeable weaknesses; limited flank defense and limited bodies defending the midfield.
Currently season 17 - level 17
League Winners (12) - Levels 1, 2, 3, 4, 6, 7, 9, 10, 11, 12, 14, 16
League Runner-up (3) - Levels 5, 13, 15
League 3rd place (1) - Level 8
26-0-0 league (1) - Level 4
Champions League Winners (8) - Levels 6, 8, 9, 10, 11, 12, 15, 16
Champions League Finalist (2) - Levels 13, 14
Cup Winners (3) - Levels 1, 4, 15
Cup Finalist - Level 13
TEAM HISTORY
With these players, you could play with 4-3n-2w-1, 4-2-2-2 Hexagon, 4-3n-1-2, 5-2-2w-1. That's enough for almost opponents.
Agreed about blue arrows on the ST's and DMC; Don't know how I missed the blue arrowed ST on my first comment.
Regarding the midfield, I understand your point of view. However, I like using 3 players (DMC/MC) to defend my midfield, instead of 2 when playing against the central focused ones such as 4-1-2-1-2 ND, 4-3n-3, 4-1-3n-2, 4-3n-1-2, etc...
What formation should I roll that would be balanced?
The most balanced formation is the 4-4-2 classic.
Based upon the players you've got (assuming you haven't made any roster moves since your original post), either 4-2-2-2 hexagon or 4-3n-1-2 as your default formation. It depends upon which formation your players have the best form with.
If your able to watch your match, then playing the counter-formation game is an option as well.
Good Luck!