Yes! It was the first time I got the extension. But I arrived 4 times (including this one) and travelled to China, Laos and Sri Lanka on 3 times and re entered. This time I was asked whether I’m going to stay the 3 months? After I said “yes” the IO granted me entry.
I don’t think that it would be problem for you as you want to enter the country only twice. You’ll be granted 60days on your arrival and get it extended for another 30 days at a nearest Immigration office. But make sure to leave a gap of few months before you make your second visit?