One thing to consider is that NOBODY will be as anal as you will be when it comes to your house (especially since it's brand new).
If you find that little things get to you, a roommate might push you over the edge. Those crumbs on the counter, the hair on the bathroom floor, the dishes in the sink, the noise late at night, the refusal to help with the yard work, the roommates weird friends, the lack of dusting, the inattentiveness to general cleanliness, the constant talking on the phone, the inability to take out the garbage, the "borrowing" of food (yes, I'm talking from experience
).
If you can handle it, awesome. Being a brand new house, I dunno'...