>>1125229there's plenty of places to wild camp.
you don't need to stealth camp as wild camping is legal in scotland.
yes you stop in at a couple of villages. though i'd recommend taking a water filter so you don't need to carry a lot of water. just fill up from streams.
only bad part for me was there is a section where you have to walk about 3 miles on a road, which wasn't much fun.
Another option would be the Fisherfield 6, a circuit walk of a group of 6 munros in one of the remotest parts of the highlands, known as "The great wilderness". Though i wouldn't recommend this unless you have serious hillwalking experience.