I have just spoken with Qatar, They will only allow 23KG hold, 7KG Cabin and a personal item, If i go beyond that, I will be charged extra even if BA allows more. On a good note, I can contact Qatar when the online check in opens for the Qatar flight and select my seats for free , I guess i will need to wait for the Doha at Bangkok flight check in to open and not 48 hours before my first flight ?