Very sorry for the late reply!! I am on tumblr yes, np if you want me to contact you there. After reading your reply I decided to check what happens with the other options (should've definitely done it earlier), and it seems to be all fine except if I choose Gunslinging as my first choice.
No matter which stat it is the second choice will always get enhanced by 10 while Gunslinging won't. Tried it the other way around as well, and it... works? Whatever the first choice is if I put Gunslinging as my second choice it will somehow works this way and both stats will be upgraded. (May be irrevelant idk but Gunslinging is the higher stat I have-)
Anyhow hope you'll find what's happening ToT and wish you good days.