I used to own at Mauna Loa Village, bought cheaply sight-unseen, and after staying there once, I sold it. It was too apartment-like, and had nothing going for it (other than the location) to make it worth visiting again. We stayed in an upper unit, and there must have been 25 steps in one continuous staircase to reach the unit, which was dark and rundown. The Holua units are at the far end of the resort grounds, and I was told some units there might have a distant ocean view. But if there is now a resort built between there and the ocean, I don't know if that view is still there.
I currently have August reservations to stay at Kona Coast II. I'm told the units are closer to the water, and are larger than KCI. I originally had reservations for Kona Coast I, but Tuggers advised me to switch to KCII. So I did.
The four locations you named are very close to each other, basically at the end of Alii Drive, so among those four, if it was me, I'd choose Kona Coast II.
Dave