Hi
You have everything organized very nicely.
The cricket's size is important. Make dinner easy.
Put lots in the bowl--- all the wiggling will get their attention

You could put cricks the bowl ( I use a clear glass bowl with about a 4" side) and on the sub. until you see them at the bowl.
They catch-on to the idea very quickly.The supermarket has them ( the storage ones that come with lids- usually by the plastic wrap.

Personally, I do not like the "night lights". I have 2 species of tree frogs - Agalychnis ( moreletii and callidryas) It's my personal opinion they do better in complete darkness. I turn a dim light on or use a flash light if I need to view them.

Yes I think the legs are fine.

The temp guns are great. I use fish tank thermometers too; they are accurate and easy to move around. Cheap $3.99, no cords and no darn batteries. I really don't care if see the thermometers. I would rather see the temps

Supplement ideas :

Rep-Cal Ultrafine Calcium with Vitamin D3 (PINK) - Rep-Cal Supplements | Josh's Frogs
Rep-Cal Herptivite Multivitamin (BLUE) - Rep-Cal Supplements | Josh's Frogs

alternate with

Repashy Calcium Plus (4 oz) - Calcium Plus Supplements | Josh's Frogs

Hope this helps --- anytime !
Have a great weekend.
Lynn