i think that VID is actually pretty high, isnt it? my 6600 was 1.3 and it wouldn't clock for **** and man was it hot.
you have water, though, that will make a BIG difference.
my new air cooler seems to be pretty awesome, im getting about same temps as you on my chip with current oc (see sig). i have less volts obviously lol but it is air...pretty good. its giving me quite a bit of headroom it seems. i have another .15 (1.36~something)volt before i even reach the "intel specified (lol)" max voltage.
good joba nd good luck on the OC