Yeah you could certainly do that. I love parti-gyle brew days. What I do is make a starter that's slightly too big for the first runnings, and after about 24 hours I use the "slightly too big" part of the first starter to inoculate a second starter for the second runnings.
Primary: air and sadness =(
Kegged: air and sadness =(
Bottled: English Barleywine (brewed 9/26/09 -- bottled 5/5/10)
LET'S GO LA!
PLAY FOR GLORY, THE GLORY LA!