Hello everyone

I hope I post this question in the correct place, as it's a cross-over question about Amex/BA/QR.

I want to transfer my Amex points into QR avios but at this time it's only possible for me to transfer those for BA avios.
Am I correct that I could transfer those Avios, generated with Amex, eventually into QR Avios? Furthermore, I don't have a BA FFP account right now. I do have a QR one (Silver - OW Ruby).
Would BA allow me to open a BA account, just for the sake of me using it to transfer the Amex points into Avios with BA that I would transfer then to QR? Ive read stories in the past where BA would block Avios transactions of accounts without prior activity, which has me worried.

Would it be a better strategy to just open up an account with BA, credit one of my next OW flights onto that, just for the sake that there was activity on the account, then transfer Amex points to BA and move everything to QR?

Maybe I'm overcomplicating things or looking over things, so any insight would be greatly appreciated. Many thanks in advance!