I think it just depends on how long you each take to respond to negotiations & how clogged the court system is in your county. I know my cousin kept having her court date moved because they would put too many people on the docket for that day-- she'd show up and then was told it would be another month before they'd go before the judge again. (They had a very contested divorce, though.)
There are 4 family court judges in my county-- my lawyer estimated it would take around 8 months IF DH and I didn't take long to settle everything. (I'm pursing quite a few standard agreements, too, but DH will probably fight for more custody than every other weekend.) He was served the papers last week & has 30 days to respond to the complaint. I hope it doesn't take that long!