Only thing i fear is that the production team will spread itself too thin, with the upcoming Supergirl and Arrow/Flash spin off. I hope im wrong though.
Berlanti Productions does have time to ramp up. They went from Arrow in 2012 to two shows in 2013 with Arrow and The Tomorrow People with a shorter Golden Boy to top it off. In 2014 they're juggling three shows already with Arrow, The Flash and The Mysteries of Laura while working on PAN.