In regards to the Kolsch acting like a lager, from what I have heard, it does... good luck.
Wyeast 2565 --- An ale strain that leaves a subtle, almost lager-like maltiness in beer. Ideal for German Kolsch-style beers and fruit beers. Low flocculation, attenuation: 73-77%. Ideal temperature range: 56-64°F.
Wyeast 2575 --- This authentic Kolsch strain from one of Germanys leading brewing schools has a rich flavor profile which accentuates a soft malt finish. It has Low or no detectable diacetyl production and will also ferment well at colder temperatures for fast lager type beers.
White Labs WLP029 --- The slight sulfur produced during fermentation will disappear with age and leave a super clean, lager like ale.