I'm not sure about Homested but I know that Sportbike Track Time usually offers 2 track days every year at Moroso. They should have one coming up in November. Check out their site, I'm pretty sure it's www.sportbiketracktine.com
Moroso will occassionally hold open track days but only for licensed racers, once you get enough track time you could always go for your CCS race license and ride many more tracks.
Talked to a buddy of mine that is one of the "Board Members" for the Homestead track, and there isn't any motorcycle racing there. Can't say there hasn't been an exception in the past, but for the most part..no.