1,000 words per hour maybe, but at that pace you'll likely start bloating your editing time depending on your standards, and you won't be able to keep that pace up all day every day. If you knock out 3600 words a day across a couple days, you'll likely see a dip in word count for a few days with just writers block (but then again, that depends on your standards).
Also consider that:
- The average novel is 50,000 to 70,000 words
- The average book is considered "too long" for publishers when you're north of 100,000 words.
- The 6 volumes of War and Peace totals 561,304 words
- The Lord of the Rings trilogy - 455,125 words
- 1,000,000 words are about the size of all 7 Harry Potter books
That's a great vision, but if you don't have your milestones planned out in much more concrete smaller chunks you'll burn out long before you get out of beta. You'll need to give yourself little "wins" to see progress which will help you keep up motivation.