With those hours you could be put straight onto the 777, if you pass the assessment you will go into the holding pool and then it is a waiting game. When I joined they offered me an airbus course in 3 months and said that I could turn this down in the hope that a 777 course would come up soon. However this did come with the warning that if I turned down the course I would go to the bottom of the holding pool list and there would then be no guarantee of another course being offered in the future. With BA it is just better to get in regardless of type as seniority is everything, for example I joined 18 months ago and are now 400 places up the ladder, if I had held out for the 777 I would have been lower seniority by around 150 places which would of meant that I would maybe have to wait 2 - 3 years longer for a command. I will get onto the 777 within the next couple of years and I have good seniority so all is well.