DR isn't such a cheap place to live unless you want to live in the same poverty you are coming from. You said yourself prices are the same as Ukrane. What happens when you get to DR and can't afford to get back to where you came from? Who takes care of you, then? He gets "free" meds where he is now. Think ahead, if the "bill will hurt" you, then neither of you can afford to move him here. Nice of you to want to help, but moving and living your new life may cost far more than where you are now. You did say he gets free now and how will that work when you come here? I read your last statements as in addition, not just the only question. My comment was toward your first question.
I don't post often because my opinions can be a little radical but, I feel pretty strongly about this.