Yeah, don't let it cool down too much. 100F is fine.
I'd add to the primary if you don't plan on re-using your yeast. The keg is fine, but I take my kegs a lot of places and don't like shaken up sediment in my beer.
Primary: RIS, Flanders Red, Berliner Weisse
On Tap: Brown Ale, American Stout, Pumpkin Porter, Pale Ale, Uncle Muscle's IPA, Rowsdower Canadian Dry Stout
Bottled: Berliner Weisse
I think you are confuisng circle k with a reach around. - Denny's Evil Concoctions