oooh can't choose. Love the look of Rheyden, but I would have looked at it and pronounced it Rayden IYKWIM? Which i think flows nicely with Anne.
All your other kids names folw really nicley and I personally think Redden pronounciation is a bit stop-start. Sorry yabbering.
Malia is pretty too, and no I don't think too common.
That did't help much did it?