Youngtraveldude

Back to figuring our our return from our honeymoon to SE Asia in June and I'm hoping someone can confirm how much certain routes will cost. Currently looking at the following options:

1) KUL-HKG-US on CX
KUL-HKG = 30/40K aa miles (biz/first)
HKG-US = 70K/100K (biz/first)

2) KUL-DOH-US on QR
KUL-DOH = 40/50K aa miles (biz/first)
DOH-US = 70/115 aa miles (biz/first

3) KUL-NRT-US on JAL
KUL-NRT = 30/40K aa miles (biz/first)
NRT/HND-US = 60/80K miles (biz/first)

Is that accurate? Also, can any of the above be booked on one reservation (even if the costs for both legs are their own)?

Also, in terms of availability, will I possible find better or different availability if I split up the legs? I.e. look at KUL-HKG as one award/segment and then separately look for HKG-US.

We're flying CX first (one first/one biz currently) US-HKG and still need to book HKG-KUL. The criteria for selecting the return are availability, flight times (try to maximize trip) and cost (might not be an issue if we have enough miles).

Thanks in advance!