As long as you are in good health and reasonably fit you should do this!
You certainly won't regret it and will feel a sense of achievement afterwards! Expect to laugh a lot and to be amazed by each small hole you get through! We were so glad we did this, it was the highlight of our trip!
Tip: You need to organise and but your own bus tickets. (2 buses there and 2 back) so buy 2x connection tickets at the tourist info or the nearby train station.
If you own or manage Caving Under Budapest, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.