Toddler bed. She sounds ready even if you aren't. Like Fred said, you'll be having to find your trick to keeping her in bed, it took around two weeks for us as well for all our transitions. What worked for us was removing other climbing temptations, and sitting outside the door. When lo would get out of bed, one of us went back in, said nothing and tucked back into bed. It was a game at first, but it got old fast when they realized we weren't giving up.
We transitioned at 2ds, 15 m dd1, 18mdd2, 18mdd3, and haven't yet dd4 (she's not bothered, she's not the climber her sisters are).