Re: It might be hard finding employees in Lincoln
the cost of living is really low
It's certainly low relative to the coasts, but it's no better, and in some cases worse, than much of the middle. Our CoL was somewhat higher in Lincoln than it is in the Lansing area. For one thing, you can get by without air conditioning in Lansing, but Lincoln is miserable in the summer. And in the winter. (Spring and fall aren't great either, unless you really like wind.)
I have no idea if the university has a good computer science or computer engineering program though
Ranked 75th by US News, FWIW. Tied with Colorado State, U New Mexico, Tennessee Knoxville, Tufts, Washington State, etc. Basically above the median, but not remarkable. (The USN report covers 188 schools, but there are a lot of ties due to the rubric they use. Also pretty much everyone takes issue with their methodology, but this is a highly subjective question anyway.)
But do data centers have a lot of staff anyway? And Omaha is only an hour away, not to mention the teeming metropoles of Nebraska City, Beatrice, and the like. The data center's going to be on US 77, so easily accessible to commuters. Though a traffic jam in Lincoln, at least when I lived there, was generally "eh, I didn't make it through the traffic light on that cycle".
One thing Lincoln does have going for it is decent food, if you avoid the big restaurants. It's a mission resettlement city, so there are lots of immigrants running hole-in-the-wall joints with authentic recipes. I have fond memories of a Salvadoran place, and a Ukranian sandwich shop, and some great Chinese places. Even some of the fast food chains are distinctly regional (ah, Runza).