300 million Americans all get it. Death rate 1% 3 million die.

Currently about 80000 cases with 1500 deaths after 1 month.

Reality will be obviously be somewhere in between.

I would say your projections are close but a little low. I think at the end of the year the attributed deaths to CV will be around 100,000, regardless of social distancing measures or other government mandated restrictions. Maybe as high as 500,000. If it were 100,000 then at the peak we will likely have several thousand for many months and we won't be below a thousand until fall.

3 million just seems like too many. I think yours would be a best case. I can see the argument for your scenario if more of the population has already had CV, but we don't know because they were never tested. We also may be counting some flu deaths as CV and vice versa.