How late Sunday? I can't play after 9. >_> But anytime from Wednesday-Saturday nights are good for me until 1 or 2 am. I have school off then.
well i live in the UK, so if we do it by american time i'd hazard a guess it'd be about 6pm sunday? (that'd be 11pm for me)
I don't have MW3 (yet), but Sunday ought to be good for me in general, once I renew my Live subscription. :)