Congrats on FP+! Sounds like you did pretty well!
In terms of Anna & Elsa - I just checked my pictures from my last trip. According to the time stamps, we took a picture outside at 11:31, and our last picture with Anna (who we saw second) was at 11:38 - aka about 7 minutes from beginning to end, close to the same time as you (but not exactly the same time because the date stamp on my camera is an hour off). We also had no wait (we went in to see them right away). I'd say it will take you no more than 20 minutes, and very likely will take you less. If you go 5 minutes early (as everyone suggested), I think you'll be out around 11:30 (again, maybe even earlier), which gives you more than enough time to get to BOG.
But yeah, it would be really nice if the FP+ system took your ADRs into account or showed you when you had a conflict.