I need to get from IST-DTW June 10th, I have some united miles I'm thinking of using. The question is, how can I maximize my itenerary? This is one of my first united award redemptions so I'm not very familiar. For example, I'm being quoted round trip IST-DTW-IST @ 135k miles in First for one person. Would I be better to add an asia destination with a stop in europe for a few miles more or something? I guess my question is how are united miles redeemed for their most value. Thanks!