i think i will go with 2-3 zone because my pg trainee who will get 48 mins today has average OD and the SG has respectable OD so i guess this wouldn't help prevent the ball getting to the post if i use 3-2 zone. also i wouldnt risk a cup game with an unknown defensive tactic (inside box and one). But the 3-2 zone tactic to prevent the ball getting inside is something i will definitely try once i have guards with decent OD.
Thank you Manon and ibarix for your time :)