I'm planning to use my EC miles for SFO-HKG-NRT on CX in F and J. I found availability last night using the BA website but I still need to figure out the following before pulling the trigger: 1. As my home is in Hawaii, how to get back to HNL from NRT without mixing carriers to avoid the fees (there may be no way around this as CX does not fly to HNL) 2. If I can add a leg to HNL on the reward, will the BA agents charge this as a one-way award? I'm not sure what the MPM is between SFO and HNL or if BA will enforce it. 3. Should I just forget about using my EC miles and just use my DMs for a J award on a similar routing (although I really want to experience CX F). Any thoughts or suggestions?