Yeah it is tough to trade QBs in 1 QB leagues because there are so many solid options that people don't feel the need to give up a stud at another position when they have a guy they like, especially in only a 5 player keeper league. With that being said, I would def. do the second trade. You still have Brady who should be elite for 3+ more years. Charles is a huge upgrade for you at flex and Bowman is a beast.
If you really want to get a stud RB, try dangling Tom Brady out there and see if you can get someone better than Charles, and keep Luck. That is honestly the way I would go because Luck will be as good as Brady very soon (although that is a debate for another thread).
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