Some people might go just with 23Kg, others may very reasonably want to take more.

EK/QF are not good choices when wanting to take a lot of baggage - something like BA would have been a lot better with much more affordable options to take baggage

Excess baggage company in Terminal 3 will do the job for the OP nicely. Check in that which can check in, then go to their office in terminal and send it through their baggage service. Will be there within 10 days

No need to go spending money on new things unnecessarily