On Singapore business class you ideally want the bulkhead seats. These come with full-sized footwells, rather then the small cubby holes you get with the other rows. This is one of the few exceptions where I take a bulkhead over mid-cabin, as the potential trade off of galley and WC noise is worth it for all the extra foot room.
Otherwise, I would generally go for a seat mid cabin. That gets you the least noise, disturbance and foot traffic. 14K being right by the galley is going to have more noise and foot traffic.
For you red eye you can have your book the cook selection in place of breakfast.
No book the cook ex BKK.
Book the cook is fine if you must have lobster on board. Otherwise there’s something to the surprise of seeing the menu on the day and getting to pick. At least it helps pass 10 minutes of time