Awesome choice, those guys are just stunners at every life stage
Your setup seems good. The thing with Avicularia is that they need fairly high humidity, but they also need high ventilation, so taking it out of the vial and putting it into a more ventilated anclosure was a good move. Just keep the humidity up with misting like you have beenas for the plants, that's a great idea. You can get leafy fake plants at a dollar store and "decorate" the enclosure with them, and it'll give him/her somewhere to hide and feel safe, which is always a good thing.
Those crickets are a bit on the big side for him though. Generally the rule of thumb is the cricket should be no bigger than the spider's abdomen. For him I'd suggest something about as big (a little bigger is OK) as his abdomen 2-3 times a week and you should be golden.
Good luck with him/her, congrats for taking the plunge, and keep us updated with pictures![]()