While I agree with your post with regards to needing two starting caliber QBs, I don't think that the chiefs are thinking this way. I still think they will take Joekel with the first pick because he will be the highest rated on the board, and they will try feverishly to trade back to a spot where they can match need with talent and pick up a pick or two along the way.
I think you are correct with your stragegy. Look what happened to the Texans two seasons ago. They lost their starter, and ended up playing unproven guys or they probably make it to the superbowl.
Having said that, I just don't think this fits what these guys will do. I think they will look for the Qb in the 3rd or 4th round. Maybe a guy like Matt Scott from Arizona or something. I just don't see them essentially giving up a first and a second this year, and next years second for one position.