back testing idea

today's idea about back testing.
developing trading strategy based on asian range; because strategy we want to develop is about trading before london open like 5:00 GMT and new york session up to 17:00 GMT; so i am consider other time as asian because i am considering after this time i would be sleeping.
idea is developing strategy based on asian range
1. if price breakout asian range; go long
2. if price breakout asian range; go short

if price keep trading in the same range that would be considered low momentum market.
let back test; i will be back with result

guys comment below if you think there is any thing i could add???