Sometimes we get involved with a prior land plan, but usually I ask to take another run at it, and am usually successful, although there are usually some limitations. These often make a lot of sense from a development standpoint, including the mention of sewer systems...
I recall one project where before I unrolled my plan, the pres of the Really Huge development company said, "If I see golf holes along that lake instead of houses you can just roll the plan back up...." I didn't even unroll it, and chose to focus the meeting on "goals and objectives."
In most cases, the golf holes go best in the valleys anyway, creating views along the way by virtue of naturally elevating the houses, so many times, the routing isn't a compromise beyond all the houses bordering the fw. Generally, the routing meanders the entire property through the houses, rather than taking up the south 40. The exception is when there is a large chunk of floodplain that they want the golf course to use. Sometimes, that dictates part of a core course, rather than giving up more upland for the golf, because a math analysis shows that they don't get their money back in more lot premiums.
So, they have to be planned together, and I prefer to do the routing, rather than accept a land planners routing, which means I also have to figure out the basic road pattern to the various areas, and not just to shorten up green to tee walks, but that is a factor.
The land planners, marketing gurus, and site conditions - like where traffic comes from, where water and sewer come from, etc. to tend to set some broad parameters. Planned land use, does too, since there is usally a program for X acres of commercial, multi family, single family, school sites, etc. need to be worked into the plan.
Its like doing jig saw puzzles and getting paid for it!