about taking GRE one month before a deadline

[hmss9245]

Dear all, this is a GRE re-taker who has two schedules of the upcoming tests, one on 8th October (yes in a week ><) and the other 6th November.

As the nearest deadline I have is on 30 November, I would definitely mail the result of the first one (to be taken this month) to that program, but my second nearest deadline is 8th December, so I was wondering if I should wait till my second test result (the one in early November) is available that I compare the two results and send the better one to that program?

Theoretically I think the result will arrive before 8 December if I choose to send it immediately after taking the second test (as I don't have to wait for my AW section to be ready), but is there a "lurking danger" somewhere (like the-sooner-the-better rule, which I haven't yet found on the program's website) if I wait so long as after 6 November to mail the GRE test result (exactly one month ahead of the ddl)? 

Thanks in advance!