If you didn't like the weight, why on earth do you want to get the 80D? That's the same type, not much of a change. Have a look at the 77D (it's 80D in a smaller body, minus AF micro adjustment) and get a EF-S 24mm or EF40mm. If that's still too large, get an M5 with 22mm lens. 77D and M5 share the same batteries, so you can get both and just grab the body that fits your luggage
Regarding shops you check Cathay (Peninsula Plaza) TK (Plaza Singapura), Orient Photo (SLS, L6), MS Color (AMK).