Is your garage attached? Mine is and is always 10 degrees warmer than outside temps because it shares a common wall. 25 would not scare me at all, if so. It will take 24 hours at least for your beer to come into temp equilibrium anyway.
Cold crashing does not affect priming unless it gets below freezing temps (remember beer freezes a few degrees below 32 b/c of the alcohol). If you have star san or vodka in your airlock, no issues if the colder temps suck some in the fermenter.
Primary #1: Empty #2: Empty
Secondary #1: Belgian Golden Strong #2: Dark Belgian Strong #3: Barolo Wine #4: Framboise Lambic
Kegged: RedHook ESB clone, Fat Tire Amber
Bottles: Surly Furious clone, Kicked by a Moose Scotch Ale, Apfelwein, Russian Imperial Stout, Trappist Dubbel, Carmelite Tripel, Pinot Noir, Rhubarb Wine
On Deck: Kölsch IV, Altbier II