so the strawberry runner experiment did not work as well as i thought.
lesson learned: strawberry runners don't do well transplanted in a pot when they have not rooted.
next time, i might try to wait until they runners root, then dig them up and transplant them. i will try this with the runners that have already started new plants (that i did not get to right away) but will clip all the new runners to divert the energy into producing strawberries. afterall, that's why i bought them.