Reducto,
I wouldn't roll it, since in your climate you would get the bugs and need to be more experienced. I think it could be done from those looking if done at the right time. Spraying would allow you to start and stop if necessary with less mess and clean up. I would do it on not a windy day so the dust is kept down. If possible, wait for the ground to be damp, so there are less bugs and dust. The results of Decodancer's job are amazing so I would try it. Maybe you could borrow one of those picnic table net enclosures or use tarps and tape and back sections at a time in there to spray. The good news is, where you live, it will dry super-fast.