I agree. Keeping it simple is will mean less maintenance and worry when your first starting out.
Look at some of the build journals. There are several that members, including myself, have posted that will guide you through some pretty easy setups.
You will see many with cool backgrounds, you basically just need a good drainage layer, the top substrate, and plants.
If your tank location has a normal room temp of 65 to 70 at night and 70 to 75 during the day, your all set to just add some day lighting and have some happy frogs.
Keeping humidity up is easy if you have the top almost completely closed up too.
Your family will love having frogs that are out and visible during the day time hours.