It probably isn't going to be difficult at all to find a spot suitable for setting up camp and surviving a few days.
Finding something scenic, or by a water source may be a bit more challenging.
If you can read topo maps, do some homework....figure out what the terrain will be along the service roads...and decide where you want to be. Should be able to identify water sources from maps or google.
Don't sweat it...but I would recommend getting into your target area early enough in the day so that you have plenty of daylight to search out your spot and set up your camp. If you are camping near your vehicle it's a lot easier in some ways because all your gear is right on hand.
Hiking out has its advantages though as you can really wander around until you find a great location.
You will have a great time either way....just dress appropriately, have some plans for weather, and enjoy your time in the hills.
Take some pics and post them up