LAX-EWR in either direction is a risky bet on find (saver) business award space or mileage upgrades. This is consider one of UA's premium transcon routes with lie-flay seats.
Today you may see some space perhaps but if travel returns to even a sub-normal level, award space on that route has been notoriously difficult and expense.

Even cash prices are presently depressed

Expect prices / mileage requirements (or space) to get pricier thru the year.