Thanks for your comments, Mwenenzi. I was mainly wanting to check that I didn't break any rules, I should have mentioned this in my request).

We are not interested in maximizing for mileage etc (I know it's a shock), we use OWE because we need to visit family in Aust and Chile, and we are currently living in Spain, so we use the OWE for "free" tickets within Europe without having to worry about fixing dates etc (we generally change our dates many times before using). And yes use QF Freq Flyer.

Thanks again