You would definitely have to test it out! A checkpoint system could be nice for sure, but I think with proper design and balance of the mechanics, the fun of trying a level again and again and mastering the jumps of the levels is super driving if executed correctly. I could also see it working super well with some kind of timer, allowing people to speedrun and compare times, where the checkpoint system would be a great way to practise the tougher sections, whilst also allowing casual players a better experience.
Glad I could be of help, good luck with the full release :D