I've done this in the past, but it is tough to go from the temple to the slavers' series, as the PCs will be too high level for it. My party finished at about 7-8th level, where it is best to start the A series at 4th or so. They had a few homegrown adventures then started the GDQ books.
I then ran a group that started with other stuff and then the A series. Afterwards, we did GDQ and it fit well after some tweaking.