I am nearly spamming the forum with all my questions today... sorry.
This is not a problem and what we are here for
Personally...I would put
1) one on the left side front corner, blowing straight, or angle slightly into the tank, about 1/2 way down the side of the tank.
2) One on the right side back about 1/2-2/3 down blowing across the back.
3) on the right side, front towards the top angled into the aquarium.