Good morning people!

I have the following thought:

Trying to build the following in order to credit to BAC. The goal is to get the 50% from most of the airlines based on miles flown (QR,JL)
Question is the following:
If i book the ticket with BA, will they credit that based on spending rather distance flown as i presume? And if yes, how can i circumvent that?
Segments are the following:

OSL-DOH (LHR) BA\QR
DOH-LAX (QR)
LAX-HND (JL)
HND-SIN (JL)
SIN-OSL (QR)

I calculate a potential of 13640 nTPs without the OSL-LHR leg. Let me know please your suggestions and possible additions that won't skyrocket the price and maximise nTPs income


Thanks!