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So I can't do thur and sat, and fri only till my 10pm this week, I would suggest sun since I can till very late but ur implying ur not available then. Unless u somehow find some unforeseen window of opportunity I'd recommend an extension since I can do monday pretty easily.
are you able to do 7 pm my time on monday though? because my weekday availability isn't changing. i can do sunday evening if we need but i would much prefer another day