Welcome to FlyerTalk.
1. In which class of service to you intend to fly? Economy or a premium cabin?
2. If you were to pay for the flights with money, which airline would you fly and what would it cost? This information is necessary to judge if the miles are saving you enough money to choose (for example) a less convenient itinerary. Award tickets are seldom "free", there are usually some taxes and fees to be paid.
3. How much can you spend on credit cards in a typical month?
4. Have you obtained copies of credit reports for you and your spouse? Do you know your credit scores?