Welcome to FT! You will see several current threads discussing the Silver Service trains, Viewliner sleepers, and long-distance service in general. These topics have been discussed at length.
In my humble opinion, sleeper awards are
bar none the most valuable use of AGR points. Take the train both ways, or drive one way if you'd rather meander and sightsee along the way.
For more third-party information on Amtrak travel, please visit
RAILtravelling.com. Remember, every trip on Amtrak is an adventure!
Please feel free to ask any additional questions if you cannot first find answers in the threads on this forum.