There are allways women turned off.... because you are married, because you never were maried, because you have kids, because you dont have kids ......etc.etc.
Its allways about how you sell yourself.
I wouldnt tell them you are looking for a princess, because you wont suggest you are the white knight (beta provider) when you rather want to be Conan the Barbarian.
Just tell them marriage is out of the question for you...... because thats what smart guys do today, NEVER EVER MARRY! So best to not install that hope in them from the start. (Unless you only wanna **** that woman.... then tell her whatever she wants to hear!
)
As for the kids, tell them your LTR´s:
*didnt want kids at all and it was okay for you in your twenties
*put it off and delayed until you decided in your later thirties to move on, as you want kids at some point