It will not hurt to be a bit out ahead of the leading edge. I have low-wing models with the gear attached with the axle 3/4" or better in front of the leading edge. The center of gravity factors in more than the leading edge. Too far ahead of that and you can't get the tail up on the rollout. Too close and you do face plants coming and going.

And, although you balance the model dry, you usually try to take off with a full tank of fuel ahead of those main wheels.