How fast can I realistically write 2 books without hurting quality?

I want to write 2 books, and I am thinking because my outline is so easy to develop, I could do up to 10,000 words a day. But I am not going to sacrifice quality for speed, because if I delay my book launch by just 1 month, I might improve the quality of my writing by over 14% which means higher reviews online by people who buy my book.

Once my book is done, it does not mean I can get published right away, I have to wait at least 2 months to register my business name, so I do not get sued by the CRA if my tax burden is too high, and not worthy of going unregistered as a personal business when I make too many sales through books.

How fast can I realistically write 2 books without hurting quality?
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