Switching between a stick arrangement across the car and along the centreline won't change the yaw inertia. Across will have more roll inertia; along will have more pitch inertia; but I suspect those will have very little effect on the car.
If you wanted less yaw inertia then closely-positioned saddle packs (3+3) would be the way forward, but mostly I think you're only changing the weight distribution.
HTH!
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