Just use a hydrometer to make sure you have a stable FG over 3 days first. In 5 days,it should be done with initial fermentation,& will slow down till it reaches FG. Then give it 3-7 days after that to clean up by products & settle out more. The beer can be clear or just slightly hazy on bottling day,& still have plenty to carb with.
Use a bulk priming calculator like the one at tastybrew.com to figure how much priming sugar by weight (you'll need a small scale,$20 at walmart). Mix that with 1 or 2 cups of boiled/cooled water. Then add to bottling bucket while racking the beer into it. Just pour it slowly into the surface of the beer.
I've read that growlers aren't designed to hold pressures of carbonating beer. They're just for transporting beer home from a tap. That was the original intent before glass bottles came along. & they looked more like covered metal pots at the turn of the last century.