What's the problem? Temps in your area are probably close to ideal for initial fermentation. Swamp cooler it to help stabilize the temp for the first 4-6 weeks, then warm up for a D-rest for a few days.
Then place in fridge without a controller for 4-6 or more weeks.
I waited until I had a temp controller to do my first lager, but I don't see why now. The normal range for a fridge should be close enough.
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