The LAX-DTW A350 flght (DL494) is at 9:10AM through March 7th. You'd have to fly into LAX the night before to catch it. There's currently a 12:24PM LAX-ATL A350 flight (DL395) and also a 10:55PM 767 red-eye flight (DL446) through March 7th.

You can't book SEA-LAX-ATL-ALB routings all on one fare as fare routing rules don't allow it (they only allow SEA-DTW/ATL-ALB routings). You can potentially book them on separate SEA-LAX and LAX-ATL/DTW-ALB fares. However, there is frequently no FC married segment availability on LAX-ATL-ALB involving the wide-body flights on LAX-ATL. On dates with no married segment availability, you'd have to book the LAX-ATL and ATL-ALB flights on separate tickets and fares to get those flights (unless you are willing to have layovers longer than 4 hours at ATL).

Here are dates and prices through March 7th with married segment availability in FC on LAX-ATL-ALB with the 12:24PM LAX-ATL flight (using Google Flights filters). If you are willing to fly 10:55PM LAX-ATL 767 red-eye, that would open up more options.