Thomson mom here! I love the school and there are a good number of Asian families.
Pluses of Thomson: Amazing principal, great teachers, International Baccalaureate program, which they start in ECE. Strong feeder middle school. (Francis-Stephens). Since it has five ECE classes, it's really really easy to get in, even post lottery, especially for an in-boundary family. You'll be fine!
Minuses: The indoor playgrounds. They are probably safer and cleaner than outdoor ones - our teacher loves that there's no beer cans, no needles, no pedophiles hanging around - but they still turn people off. And the facilities in general are old and not so great. I don't see these as major issues though.