Not wishing to be picky, but if you write about your father's life from 1930 up until he gets married, that would be a biography, not a novel.
50,000 words in 30 days divides to 1666.666 word per day, so perhaps a satanic-themed novel might be better choice! On a more serious note, while that isn't actually a lot of words per day (I used to have to write far more than that a day when I was a hack for a newspaper, that figure being roughly equivalent to how many words there were on a page of the newspaper with maybe one picture), it nevertheless doesn't leave a lot of time for planning the structure and proofing it plus re-writing bits you don't like, which is of course what really takes up the time, rather than the initial churning it out. So I hope this is one you've had in your head for a while, otherwise, it might be a tall order to write something of that length which reads well.
Best of luck with it.
Chock