Should I date here if I plan to eventually move abroad?

I'm 25 and have started dating very recently, and I'm dating-to-marry. My dating profile mentions marriage explicitly. Of course I'll bring this conversation up early-on that I plan to immigrate abroad. And am looking for a partner who will work together with me in this and start a family after moving.

My question is, am I looking for a unicorn? Will there even be such men who will agree for this (My dating preference is men of age 24-27 if it matters)? Or should I hold-off on dating until I'm actually abroad (by next year)?