Instant Replay in HS Championship Games?

[HLin NC]

While it may not give a reason to impose instant replay, as the only good angle would have been a goal line camera and assuming that most states are only going to be able to use a live tv feed- as it would be mega-expensive to do otherwise-would it not be cheaper to use a 7 man crew and thus have a better chance the wing is able to cover the pylon?