the second option cause the rating I care about is my rapid rating. I play 10 min so I could play 120 moves at 4500 Elo. I would be the undisputed world champion in rapid and classical. If I chose the first option, I would lose to Carlsen who has an Elo of 3100, I think.
Play at an elo of 3000 and only think for 1 second each move. OR Play at an elo of 4500 but think 5 seconds every move.