in my view, the question would be if it would delay. It would above all involve more "review" from a funtional process point-of-view (visa processing) - time being the main factor here (?). From a pratical pov, I would ask if there was a greater "priority" to either goal, and decide probably not to go for the DR citiz at this time. On the other hand, it is difficult to respond as adequate as best, without more details - especially in the sequence of time and "currently waiting" status.
Gut feeling would say that with the two DR parents, on balance, you might attain the DR citiz within best time posible, prior to CR1 appointment. That is a guess.
