I'll be pretty surprised if all those guys are playing for Iowa State next year. I expect 1-2 guards to either 1. leave for the NBA, 2. transfer, 3. de-commit, 4. be injured, or 5. not be granted a 5th year of eligibility.
Add to that that 1 or 2 guys who won't be ready and/or are just out competed for minutes and there you go. I doubt we'll have a bunch of guards who we want to play against WVU but just can't find the minutes for.
All of those things will happen. Ernst will have to play point.