I see. I think DK at indicated 2.08m is a very attractive price for investors. It is 200k cheaper than the classic 3BR. The rental is definitely better for the DK and you have the option to stay either in the studio or the 2 bed, renting out the other. And after seeing the layout, you can easily open it up, when you have a bigger family in future.
Anyway I think the DK will be snapped up, if I am not wrong not many units. I saw your number quite behind so maybe 3BR might make more sense.
All the best!