Pull the intake first.
It could be that only 1 cylinder has a problem but the water went to the other cylinder via the intake. Not likely but could be, so I'd check that before water gets everywhere.
I would also do a compression check before you pull the head, why not? You could still pull the intake first.
Cracks can be really hard to find, I once cracked a cylinder wall, had to run my fingernail up n down the cylinder til it snagged in 1 spot. Still couldn't see it but could feel it.
Turns out the wall was less than .040" thick right there, Ford Cleveland.
So far, looks like yours might be a head gasket, hope so.
