Lost key

Ford can be a pain with things like this. Your easiest solution would be to have either a dealer or automotive locksmith cut you new keys based on the VIN number of the current vehicle. Then swap the column out and use the ignition as you planned on. That is because Ford runs the key information through a couple modules to verify it is a valid key. They use the dash, BCM and ECM during the verification. So you would need to change those parts, but then because those will not match the other modules you need to deal with those as well. (Most makes now do the same)

You should be able to use the non chipped key to pull the ignition cylinder. You will be disconnecting the battery to remove/replace the column. The security system will not trip if it is unhooked. While you have it out you can get the new keys made then just have a locksmith match them to the truck.