Stop campground at 49 mile is quiet and was well maintained, (Chicken camping is a basily a parking lot). 49 mile on the left just before the bridge is a BLM camp ground, facilities: out houses, water is hauled in. There are two separate camping areas; one is pull thru sites for larger rigs the other is back in, you could park a lage rig in some o the back in sites.
From there you can take your time leaving at 10 a.m. and be in Dawson by 4 p.m. Or you could camp one more night along the way several places to pull off just past the border in Canada.
The road is in good shape by Alaska standards, just take your time it is gravel from 49 mile to Dawson except foe 10 miles just before the border, I don't get the pavement up there but that's government for you.
Dawson
Stay in either provincial camp ground much better than the commercial camp grounds.
First one is just before the Ferry, you can ride across as foot traffic no cost walk Dawson to Gerties and shops. The second is about 10 miles past Dawson by the airport. The Airport shuts down around 9 so it will be reasonably quiet.
Enjoy your stay.