if you had your little ones for 2 years, then rest assured, you are far from an inadequate host. amphibians only have a few basic requirements to meet, which you obviously met for 2 years. all the fancy vivs you see are basically for the owners.

as far as how to build, your best bet is to peruse the vivarium section of the forum. there you will find pages upon pages of build journals, as well as answers to almost any question you could have. then get yourself a game plan. don't worry, there is plenty of support here to help you along with your build.