Roofrepairs

Hello
I have a 2007 f150 5.4 with 150000 km it ran just fine
until it started misfiring at idle
the codes i pulled were p0012 p0016 p0174 p0300 p0302 p0303 p0304
Have no idea were to start
My mechanic is unsure Because his new boss is mister doomsday and says it is the cam phasers within 1 minute of looking at my truck
I think we should start with coils and plugs
any help would would be great
Brad