Baltimore video resolution and update

Hi guys, i finished cloth simulation yesterday and i imported all the scenes to blender today, i will adjust the light in some shoots, fix some issues, make the fluid simulations and rendering finally. About the last one, i was wondering if you would like the video in 4K resolution or if 1920x1080p is ok, there is not too much difference in time, 4K would take 16 seconds per frame against 12 for 1080p and the video contains 12600 frames so it will take a considerable time anyways, if you choose the bigger one, i will make both, i dont need to render 2 times tho, i just need to resize to 1080p before compressing, i did it that way for the St Louis video, its easy, but if you choose the smaller one, you will get only that, i cant resize the video to a bigger resolution and keep quality. I just want to know your opinion.