No, LT8335 won't work due to its SW pin voltage rating.
Are the positive current and the negative current equal all the time? If yes, you can use LT8361.
If not, I'd suggest you to use two LT8361's,…
If not, I'd suggest you to use two LT8361's, one for positive and one for negative.
You mean like this？
Looks very good to me.
Thanks a lot.