Your choices for offense and defense are independent. 3-2 zone is a good choice to match up agains the RnG. Your big men are better than your opponents, so LI is a natural choice. And your SG is apparently the best player on your team, so he will get his shots.
Now if I may give you a word of advice, you need to manage your gameshape better. Your players are in terrible shape, they will play nowhere near their skill level with inept GS. You need a bigger roster to eat up some minutes, otherwise you will be paying 20k a week for guys who play at a 5k level