My son goes to kindergarten in a week and I can't imagine him being gone through the day. It's hard to not be worried about how he'll be at school.
He'll have a great time, though.  He'll make tons of friends and his days will be full of joy!  You will need some hobbies though.
I hope so.  He's usually right there and I usually teach him.  I was thinking of homeschooling but I work also.  He is going to a wonderful school.  I do wonder if I'll have extra time on my hands.
With all the extra time you have you should start a counseling service.  I know your mom would use you!