You seem to be far better prepared than I was when I got my first dart frogs about 10 years ago (a group of juvenile azureus), but, sadly, I made a lot of mistakes and ended up losing them over time. A few years later I did my homework and have had great success.

I'm sure you'll do great with whatever species you choose. I wish I knew more about Leucs so I could point you in the right direction, but I've never kept them. However, I'm going to a local get together and swapping five of my green&black auratus tads for five leuc tads. I'm pretty excited.

There are some great folks here who know a lot more than I do. I'm sure you can get specific info on Leucs from someone.