Kinsler is a no-brainer to keep. 2B production has elevated this year but he is a decent bet to put similar numbers up next season.
Lee is consistent, I would keep him as well and you need the boost at OF unless you target that in the draft.
I would lose Mauer for sure from that list.
My replacement - Matt Garza, that guy can throw and I think he will improve next season as well. That would give you an SP#1 in Sabathia and probably an SP#3 in Garza on a 4-man starting pitching roster.
I tend to NOT keep closers in keeper leagues as they go down or lose their job so easily. Also catchers I try to chase from the waiver wire. Doumit this year, Martin last year, McCann year before...all for NO draft pick at catcher.
So my last pick would either be Nathan or McCann depending what sits better with you.
Ichiro is worth a pick...he's dipping but still on option for R, SB and AVG