From my many, many years of flying experience, the best seats for young children when I am flying in J is when the young children occupy a seat on another flight than me

Ohhh sorry this is not about my flying comfort and convenience, sorry then place the little sweet well behaved darlings in the middle seats row 1 and you both in the middle seats row 2. Sure you do not have direct sight, but its a plane where are they going to go, take off and landings are quick and I have never seen a F/A not allow a parent to hold their young child (not a 7-year-old) lay next to them when they are scared or lonely. a regular seat, way in the back would suffice also, just saying