Im looking to book 2 round trip tickets to Rio De Janeiro, Brazil from an airport near NYC within the next 4-5 weeks. Were looking to stay for about 2 weeks and plan to rent an apt/house when we get there on AirBnB. I currently have around 50,000 Chase UR points and 27,000 AMEX points. This would be my first time using miles/points for a trip. I found RT flights for around $644 on AA using Google Explore Flights. My plan is to bid at 50% off on Priceline and hopefully get both tickets for a total of $644. I'd like to get both tickets with only these points if possible. Does anyone have any other suggestions for optimizing the value of my points? I know CUR and AMEX points are valued higher than other programs. How would I put this into practice in this case? Any guidance would be very helpful. Thank you!