Can you give us one good reason why, any team, would want to hire Childress. I wouldn't even want him in town.
All the options at QB this year are risky. Trades,FA's,Draft picks. Giving up a draft pick or picks in this environment would be foolhardy.
Sign two free agent veterans and draft two QB's. Sign Kerry Collins and Billy Volek. Draft Colin Kaepernick and Ricky Stanzi. If Stanzi looks good enough, cut Volek or Collins. If Stanzi doesn't look great, try to hide for a year on the practice squad. Kaepernick and Stamzi are projected 4th and 6th. However, after Kaepernick throws some 80 yard passes for the scouts and runs a 4.4 forty, he will probably move up boards; especially if he has a good senior bowl week.