We must be doing something just right because I got 6 out of 7 to hatch (my first ever) and when I thought the 7th , that I water candled on day of lock down and it showed me nothing...so I thought she was a late 'quitter' well I put 'her' in the incubator anyway...and while discarding egg...
Congratulations!
Just a heads up, I am almost positive, that Bantam or any smaller eggs will take less time to mature when they incubate, as a general guideline... you could easily verify that by hunting through related threads and posts and as for temperature during the overall incubation...