thanks, you're the only one, give me a reasonable reply, matching with my case. I called to IMM today and they assured me, that if I'll come in November, they will not consider it as overstay. Moreover, my case is not approved yet.
I'm not under amnesty until October 31. I've got an extension with the Embassy's letter, which supposed free extension until November 30. So, if my further extension is certain already, does it make sense to hurry by October 31. Isn't it formal?