I have found the issue. The pixel size is wrongly assigned when is read from EXIF. Please make sure that for both projects you edit the camera model and set the correct pixel size. I am not sure for the RGB but for the thermal camera, it should be 17 (see screenshot below).
After changing the pixel size run step 1 and then if the difference between optimized and initial internal camera parameters is high then opt for All Prior.
Also, I highly recommend cleaning the dataset of the images from taking off and landing since they bring a lot of noise (see cameras highlighted in red in the screenshot below).
As per the rig as mentioned before at the moment I cannot give any time line.