So, what do you think about a one day old Mustang going along with its mother and the herd over hill and dale, running and jumping anything in the path, arroyos and logs? There's nothing wrong with jumping. I assumed you weren't going to be on her. As to lunging, a herd of youngsters will run circles around each other all day long and spin and cut.
However, if you're not skilled in teaching these safely at this time then don't.