I had Dr Doo as well on the recommendation of a friend of mine. Since it was my first I didn't know what to expect and didn't have many friends with babies so it was a steep learning curve. My friend had a good point, you really have a few months to find the right doctor and you should find one that suits you.
From my first meeting, I liked Dr Doo but wanted my husband to meet him too. My husband liked him too so we went ahead with Dr Doo.
Dr Doo really is fantastic. As everyone mentioned above, he's very patient, never rushes you, let's you ask all the questions you need to etc. As a first timer and not originally from HK, I felt it was really important to have a doctor you can trust and talk to and he definitely is that.
Re Natural or C Section, I had the opposite. Dr Doo suggested that I try Natural. In the end I needed to have an emergency C Section but we tried for a long time for Natural until my temperature went up and the baby's heart beat started to drop a little.
I found him overall to be quite neutral on everything and pointing out the facts that you need to be aware of. He's definitely not cheap but we felt it was totally worth it. His nurses are also lovely. We found out that several other friends also used him and all had glowing reviews.
The only thing I would suggest re hospitals is to visit the hospitals you are thinking of and see how you feel there. I think part of the anxiety is the actual delivery and it's good for you to have an idea of what you're in for, what sort of room you want, what the staff are like etc.