Crate size, that is....

I just got done reading Kathryn's thread on crate training, and it gives me hope!!! Baby is 1 y/o and still not trained! (sigh) I am absolutely going to do Doggy Bootcamp Crate Training!!!
Now, the question is this....I have a big crate for her (for like 100+lb dog)! I usually (for the past month or so I let her roam around) keep her in this crate while I am at work which is for about 5 or so hours. She does NOT have any accidents in the crate. So do you think this big crate will still be okay for doing the bootcamp? She also sleeps in bed with me and doesn't get up at all during the night to pee or sneak-a-pee on my carpet (I know cuz I'm a light sleeper and she sleeps by my butt or back all night). So, I don't need to crate her at night.
This has been the routine so far...wake up and go out to pee. Then she poops in the house!!!!

Then either she goes in the crate or roams around (2 house accidents in a month while roaming around). As soon as I come home, we go out to pee. Then she goes over my moms while I go back to work and pees and poops in the house!!!

Then she has free run of the house, but usually stays by my side. When she leaves my side I know she has to go out. But sometimes she'll go pee on the floor. Before bed we go outside. Then we start all over.
So, Bootcamp here we come. Now, when to begin...

So who wants to join Doggy Crate Training Bootcamp with me?!?!

Misery LOVES company!!!