If all 8 doors to paradise are open for you, does that mean you will be in the highest level of paradise if you pick the best door to enter from?

I don’t need to offer Salah Al layl because I fasted 8 days in Rajab which gives the benefit of the all 8 doors open to Paradise? Can I guarantee that if I have fasted for 8 days?

1) Yes

2) No it’s always good to pray salaat al Layl and do good deeds because just as a door opens it can close due to actions and sins.