Nice, 6700K is typically what the sun is at at noon time. The snake plant isn't a problem either, I haven't really noticed a "spiky part", but the frogs are used to experiencing things like thorns and other "spiky" plants in the wild, so it shouldn't be a problem, unless there actually is somehow a thorn growing out of a snake plant .

Now, I would keep the snake plant and the peperomia in the back half of the tank, as they tend to grow taller, and then stick the selaginella and the pothos in the front half. You can choose whatever plant design you want, though, and I think planting the tank is one of the best parts of the build .

It looks like you've got two adults. The 1.75" one may be a sub-adult female nearing adulthood, but the important thing is really their size. When buying crickets, the clerk should always give you size options. The rule of thumb is that the length of the cricket's body should be no longer than the width between the frog's eyes. Weird, right? But it typically is the rule, as this means that it is the appropriate size for the frog to digest. If they only have really big, and really small crickets, smaller is better, as you can always just feed more.

My cricket container is roughly 1ft. x 8in. x 1ft. WxDxH. It's only that small because I don't really have much more room in my bedroom for a larger container. It's just a simple plastic storage container, modified like I said earlier with a screen top. I have it stacked up with egg cartons, which they hide in. I usually buy about 4 dozen crickets every month to month and a half, which is about $5 generally. If you can store a larger container, do it, because this allows for more crickets to be bought, and it's just a lot better for them.

I don't believe that it is illegal to catch AGTFs in North Carolina, as they are plentiful, and really aren't linked to any diseases among humans. But if a vet were to ask, you could easily just tell them it's captive bred, as many people will fecal test their frogs when they buy them, just to be sure that they aren't carrying parasites or diseases.

One last tip, too: When looking for plants at Home Depot, make sure they're sturdy!