I have a golden russet on standard rootstock that is 6 years old, but hasn't produced any fruit yet. The tree is growing within 30 yards of big red cedars and seems to be doing fine though. I have red cedars growing near all of my apple trees in SE MN and none of them seem to be impacted dramatically by CAR. Some have more spots on their leaves than others, but it doesn't seem to impact their overall growth too much.
I would roll the dice and plant them both.