I heard Katharyn's screams all the way from Portland, although it took 3 days to travel that far!
Fall is not a good time to repot, especially plants
that are movfrom a great outdoor growing
environment to a much less favorable indoor environment. AS the light is reduced, so is the growth rate, including the roots. A larger pot and added soil will greatly increase the chances of root rot, especially for a succulent
, such as a Kalanchoe. If it didn't need a larger pot a month ago, then it certainly does not need one now as the fall approaches.
BTW, roots growing
out of drainage holes do not mean the pot is too small.
If the critters are on the leaves, use a forceful spray of plain water to knock them loose. If they are in the soil, then plunge the pot up to its rim in a sink or tub of plain water. Wait about 30 minutes. This will force the critters up and out in search of air.