Thank for all advice and warning, very appreciated.
For more information, the operator of B767(they only have a B767's fleet) has a strong financial and all B767s belong to owner him self NOT rented. Though, the maintanace might be some issue....but not serious.
Indeed, A320 is a better choice for me and they all brand new aircrafts.
However, "spoton" also made a good point. Once if I start of with A320 would I be just stuck to the narrow body???
I guess, if A320 is everywhere in the market. Would it be a lots of A320s experience competitors(pilots) in 4-5years from now???
Would the long-haul or heavy jet required better management and fly across more FIRs + heavy widebody jet landing will gain me more spacialize experiencse? And possible make me DIFFERENT from other people in the market???