Noshoes -- I might think about some other issue than temperature. I've got pre-ferment retarding in the frig. with more bounce than that.
Radish sprouts - no idea on that addition, but you can't just throw anything in a dough and expect predictable results. Mentioned this is your first go with no-knead, probably better to save any experimenting for later.
You mentioned being behind schedule with the timing -- over ripened and collapsed ??