I just took 6 mature plants through that 5 day frost with no ill affects, she is tough to handle it.
things are different here in AZ. our showers usually don't come until July's monsoon season
April will be 100 degrees outside. (so cover up your containers)
Also I put a plant outside last spring on April 21st and it flowered right away, then tried to re-veg until I declared it a loss. April is a bad month because it's on the cusp of daylight transition
If you want to flower outside, you can do it now.
If you want to veg outside, then just wait til may, or start them inside in april and move them in may.
(isn't it spring now? because the groundhog saw no shadow? lol)