Seamless Video Face Swap

I have a hours long video (webcam recording of me playing games on desktop from the side) in which I want to replace one performer’s face with another, keeping everything else—including dialogue, motion, and lighting—exactly as it is. This is a straight one-to-one swap, no multiple faces or photo assets involved. An additional editing I require is swapping the card that I am holding at the beginning of the video.

You may work in DeepFaceLab, FaceFusion, or any comparable deep-learning pipeline, as long as the finished footage is clean, artifact-free, and ready for publishing in the same resolution I supply. Subtle skin-tone blending, correct eye lines, and natural shadowing are essential; viewers should not notice the intervention, or able to discern that it had been altered artificially.

Please let me know what inputs I need to provide you. Presumably
(1) my 4h webcam video recording of me playing games
(2) The card that I hold at the start that I want swapped out
(3) a short video of the person that I want to replace myself in the video with, does he need to turn his head from all angles, including the back?

Deliverables
• Final rendered video with the new face seamlessly integrated
• Any editing that is required along the way to complete the video product
* Needs to be a priority and completed within 5-7 days

Please indicate your typical turnaround time and briefly mention past projects that show the same level of realism I’m aiming for.