First off, there are more than 19k undergrads at WVU. It won’t feel like high school 2.0.
That said, however, it does not sound like you would be happy to attend WVU if it’s your only affordable option in the end. Hopefully, you will have additional affordable options. But if you want a guaranteed option besides WVU, you need to find another school that is guaranteed to meet your price point.
If next spring rolls around and you would be content putting down your deposit at WVU and would get excited about enrolling and attending for four years, then you don’t need an additional school. But if you would be feeling like you dread putting down that deposit and being trying to find last minute options that you might be able to afford or be looking to transfer or graduate as soon as possible if you realize WVU is your only viable option, then this is the time to be looking for another option.
Only you can tell us how you’d feel if WVU is your only affordable option.
Some that have a reputation for it include Northeastern, Case Western, Syracuse, American, U. of Chicago, and Tulane. And yield management doesn’t necessarily mean the same thing at each school. Sometimes it’s test scores & GPA way above the 75th percentile, but other times it’s the lack of ED. But if you show sincere and significant demonstrated interest at the majority of these, that can overcome some of the yield management practices. So if there’s a school that has a reputation for yield management that you really like, feel free to keep it, but know that you do need to show a lot of interest.