Default trying flash the newest custom rom sgt2 7.0 p3113

Well I downloaded the rom and gapp from here http://forum.xda-developers.com/show....php?t=2583316 as some as I rebooted it asked. Me if I wanted To download the custom rom. And now its been 8hrs saying downloading. Ok is My tablet bricked, can I flash a stock rom? I'd like to.get kitkat on it though