What did you find that led you to believe 'would' is more polite than 'will'?
Out of your sentences, number one is the more natural sentence.
Just to provide a small definition of each word. Just to ensure you're not mistaking their use.
- Expressing the future tense: "you will regret it later".
- Intend, desire, or wish (something) to happen: "he was doing what the saint willed".
- (expressing the conditional mood) Indicating the consequence of an imagined event or situation: "he would lose his job".
- Used to give advice.
Student or Learner