Only issue I really see is the ending at noon my time on Fridays. I'm at work all day up to that point so if I must make a rebuttal I'm not entirely sure I would have the capability to do so.
Other than that this Sunday I may not start immediately at 2 EST, but will be home that day. Also the 27th and 29th of August will be a similar situation as I will be out of town for my birthday that weekend.
We had a few guys like this last year. Basically, the resolution was for the debaters to come to an agreement before the debate began. One of you would tell the other that you could only debate until a specified time frame and you'd both compromise. As long as that type of chatter happens within the debate, the judges will see that and issue Punctuality points based on the allotted time frame agreed upon by the debaters.