The MTR makes it VERY easy to get into Admiralty. Office (Wong Chuk Hang) to Pacific Place takes me the same amount of time (10-12 mins walk + 6 mins of MTR time) compared to taxi/car to Pok Fu Lam.There is a decent Fusion at Cyberport which would be a shorter and cheaper taxi ride than shopping at Admiralty.
I haven't seen it myself but I think there's a USelect (aka Tesco) on Ap Lei Chau somewhere?
Yes, there is a Tesco near the Ap Lei Chau waterfront (not to be confused with South Horizons).
U Select: yes, there is one besides Lei Tung MTR exit on Main street and it's not as good as Fusion/ Great but better than regular Parknshop/ Wellcome.