I guess, in the end as long as the forks aren't 'wrong' in terms of assembly and alignment then moving the rim is the easiest solution.
to move across you need to loosen the non-disk nipples say a turn and then tighten the disk side ones by the same amount. Start at the valve so you don't lose track of what you've done.
When you've done that place the end of the axle on an old bit of wood and put all of your weight on the rim at 5 or 6 points around the rim and then flip and do the same the other side.
to confirm if it's all centred use a ruler to measure the rim to lowers gap - don't use the tyre as a reference point.
It's not difficult to do - the only 'danger' is that you run out of thread on the drive side nipples before the wheels centred in the forks but it shouldn;t be a problem.