After reading about the spec ID, I will not be doing that. Yikes! Lots of additional burden on me to keep records. I don't want to keep records like that and risk getting in trouble.
Now I get to play "market timer" and decide when to sell this huge lump of my net worth. Typically winter is good, typically people sell in May and go away, but this bull run has been long and the political climate seems to cause volatility.
After checking my basis on this lump of shares I am pleasantly surprised at how low my tax burden will be even if I sold the shares today.