Hello,
You will still want to narrow down exactly what you will be housing.
Both of those species need more floor space ...........ie will not climb.
The tincs should housed in pairs - not a group

If you want a group of 4 or 5 ....an exo , for example 18.24wide.18H would be suitable for:
-D leucomelas (would love a 24H ... they will take advantage of a taller enclosure but not absolutely necessary)
-D auratus
-Mantella
-P terrbilis ( for 4 not 5) as these frogs are larger and need additional 'open' floor space

-a pair of tincs can go into an 18 cube or its equivalent

You can get an 18 cube exo terra on amazon for about $100 plus tax and free shipping

Hope this helps