I'm a longtime AMEX cardholder who has just recently found out about acquiring points/miles. After a ton of reading, I'm looking to do my first AOR. I'm thinking of adding a few cards. I'm currently a Green AMEX, which I will likely cancel. Here's what I'm thinking of adding. Let me know your thoughts, and if I should add any other cards on. 1. Chase Saphire Preferred- 40,000 Bonus Points 2. AMEX SPG- 30,000 Bonus Points 3. AMEX Premier Rewards Gold- 25,000 Bonus Points If I add the new AMEX cards, and then cancel my Green Card will I lose my "account history" when it comes to the factor that makes up part of my credit? Thanks in advance!