They have yellow legs so they are Barred Rocks (plus Marans have slightly different barring pattern). It is a pullet. Barred birds the females are darker than the males.
Room temperature can effect the incubator to some degree, but not a lot unless its really cold or really hot. It looks like from the temps you posted that the incubator should be just fine.
Yes, I do have a website. I am trying to get it updated right now and most of the breeds just have breed/variety names and price. Next is pictures and descriptions. I hope to have it all finished this week. The website is chicksforcheep.com.