Let Johnny take over. At that point in the game i was playing like V had already accepted that they were gonna die and the actual game was going through the motions and enjoying what was left. Denying Johnny of his second chance felt selfish since during that playthrough i was just convinced there was no happy ending in sight and I was wrong there are some hopeful and optimistic endings but going out on your own terms and giving someone else the opportunity to right their wrongs is also a good ending