So, you've gotten tons of advice already. 10 hours is a long time, but will you be able to make up for that with plenty of family time in the evenings and in the morning before work? That is what we do. My husband is gone for 10 hours a day, but i am only gone about 8 hours. Our 5 month old is crate trained and she stays in there while we are out. They usually don't "go" in their "house." so we don't have many accidents anymore. usually i try to come home on my lunch break though and let her out, but you know there are some days when i cannot. We've dealt fine with it. The only thing that is problematic for us at times is when we get offers to go out after work. Obviously we can't because our little girl is at home waiting for us. But that is a very small price to pay. She is definitely one of the family and we'd much rather be with her any day!