The other questions to ask yourself. - Why do I want to have frogs, dart frogs in particular?
If the answer is - I want to have a small piece of nature and enjoy It as such and im ready to commit to supporting it for many many years to come, then it is a no brainer either to do a nice tank or not.
keep in mind, it is an expensive hobby, you might need a vet, you will need to figure out who will take care of it while you go on vacation. Your parents need to be ok with random fruit flies appearing in your house.

I don't want to discourage you, just give you something to think of.