hi there 747-444,
did a bit of research on this as well, and couldn’t find anything past the weight limit as well. I remember seeing a YT video mentioning that the bassinet in Suites goes in row 1 given the larger area of the suite? But I could be mistaken. best bet may be to call in to customer service (YIKES! I know -_-) but hopefully you get a competent agent who can answer your question.
On the other hand, im doing this in Oct, same flight, same seat, same scenario with my 6 month old - SIN SYD RT. Will report back here once I call in as well.