That’s my recommendation, yep, focusing on hotel and flight first.
Flying into Omaha can be expensive but have heard of others having success saving money by flying into Kansas City, renting a car and driving to Omaha from there.
Regarding hotels, depending on your budget I’ve heard of people staying outside of town in places like Lincoln, NE or even Council Bluffs, IA (right across the state line). Hotels are tough that first weekend. Also worth giving Airbnb a look in addition to traditional hotels.