The other option...
Is simply to wait until you move to any other county in Nebraska where 'registration' is not required.
It's still better than PDSR California, where even private purchases must go through a FFL (and a fee, of course) and a ten day waiting period.
As a resident of Nebraska, one must have a 'purchase permit' to purchase a handgun from a dealer. However, the fee for the 'purchase permit' is $5.00 (five, not five hundred), is good for five years and is issued locally following a rather basic background check - criminal records or court mandated mental treatment. Having the purchase permit removes the requirement for a NICS check, by the way.
A valid Nebraska concealed weapons permit is a suitable alternative to the purchase permit.
For gun owners, Omaha is the state embarrassment.