I kind of messed up my ex-EU with QR from CPH, evidently time zones are way beyond me. I had booked a flight coming back on the 11th, that was kind of wrong since I arrive at 6.20am on the 12th. That was a cash booking. My question is if I should do my BA avios flight booking now, getting quite a few hours in between landing from DOH, and my departure from CPH to LHR, or is it wiser to land, and then make the booking on landing and perhaps avoid several hours at CPH?