depends where your wife is located
per my understanding,
if your wife is already in US, you can file a 485 for her also.
if she is overseas, easiest if you get her here on h-4, and file 485.
otherwise, you have to wait until your GC is approved, then file 824 for her to 'follow-to-join' after completing a consular intyerview.
as for processing times,
check the monthly reports. 824 is about 8-12 months, and CP interview after that another 6-9 months.
any other viewpoints on this topic, gurus?