I'm flying on QR730 DFW-DOH and have the option to book in 2J, a forward-facing window seat marked on EF as handicap accessible, or 11K, rear-facing window in the mini cabin. I've previously flown in the middle suites with my wife, but this will be my first solo flight in Qsuites. Everything I read says to choose a rear-facing seat for privacy, but only 11A or 11K are available. Therefore, I have a few questions:

1. Should I be concerned about galley and engine noise in row 11?
2. Is the handicap accessible seat (2J) different than the other seats in any way?
3. My itinerary shows the flight operated by an A350-900, but the seat map shows 12 rows in J, which only the 1000 has. I'm guessing this is a typo and not an indicator this flight could be down-gauged? It's been the 1000 on this route since I can remember.

Any feedback is appreciated.