If you are ok with the UI, so forget what I proposed and go on with the new version
Fo r the logic, I've no doubt that you will catch it very soon...
If it can give you some added motivation, remember that with LS , it's possible to configure exams, for example giving positive or negative weighted points for good or wrong answers, displaying where it was good or not answered etc.
In other words much more than a basic quizz...