Essentially looking to maximise a Finnair credited RTW ticket to push towards Platinum.

Looking at going to Melbourne for the hopefully final couple days of the Melbourne Ashes test, wanted Boxing Day, but can't win them all, have the pass to go, but not early enough! Queenstown for New Years, then back to Sydney for that test. Returning via America with hopefully a few days with some family in Florida.

• OSL-LHR
• LHR-DOH
• DOH-MEL (QR)
• MEL-ZQN via AKL (QF/JQ)
• SYD-LAX (AA)
• LAX-MCO (AA)
• MCO-JFK (AA)
• JFK-LHR via DCA (AA)
• LHR-OSL (BA)

Currently Finnair Silver at 0. So I'm calculating this at around 55000 Tier earning, maybe a little more as when I calculated it I didn't realize I could seemingly return to SYD to fly to LAX. But it's coming up fine.
I was stuck on it being 82000 NOK for a while, until I just changed that SYD-LAX from QF to AA and it dropped to the more mooted 69950 NOK.

Appreciate this is going the total opposite way to anything generally recommended to maximise Finnairs earning potential for Platinum here, but I'm open to minor tweaks to push the 55000 even higher up.

For instance, is it possible to get to South America and back to Miami as opposed to MCO without realistically hitting the overall price? I'm struggling to put something together there.

If the consensus would be this is as good as I can get while sticking close to the 70000 NOK, then I'm good to go more or less. But just making sure I'm not missing any little tips.