Well, in general: no. If someone doesn't know if he or she can finish something by the end of the deadline (as stated in the first post, the cut-off point will be on or just before December 2014), then I'd rather have him or her not claiming anything and then just hope to recieve something at the end. I'd rather be happily surprised with one late addition, then be disappointed by something that was promised but not delivered.
In your case, however, I think I can make an execption given your history with high quality mixes on a short timefrime. So: I'll allow it as long as you can promise now that you have a (very near) finished remix by the August, 2014.
On a side note: Sorry for the lack of feedback on your WIPs guys. I have some university deadlines and exams in this (and past) week, so I'll get back to you (and update the first page) after that!