The Alliance Gate area is somewhat far from the three locations you are looking into. Those three places are off 35E in Northwest Dallas county and Alliance is north of Fort Worth off 35W. And it's possible when you mapped the area, you didn't realize 35 splits south of DFW and reconnects north of DFW. They become 35W (Fort Worth) and 35E (Dallas). It can be very confusing.
Judging by the characteristics of the three communities you selected, I would suggest Roanoke, Keller and possibly Grapevine/Colleyville (further east than Roanoke or Keller, but closer than Flower Mound, et al). All three have excellent school opportunities, both public and private. As for your ethnicity, I am Asian, too, and live in the HEB area, the only issue I have is driving to Haltom City for the Asian markets. :) I can only go so long without fresh Asian foods!
Welcome to Texas! While there are a few pockets of communities that may not be as friendly as you would like, I can promise you that even unfriendly in Texas is incredibly gracious anywhere else.