By kwitara i assume you mean Avicularia avicularia M6 (metallica) of the kwitara locality.. Its not a recognized separate species.
Any sort of larger specimen from the genus would be a fine fit.
Slings are killed all the time. If you go that route, read some of the care guides on here.
This is a forum. Not a scientific journal or paper. We're not scientists and taxonomists here. Nor do we pretend to be. We're hobbyists from all walks of life and thus (not to be rude) no one can really sympathize with your pet peeve here.
When you make it crawl over your hands and face its probably going to be stressed. You should stop bothering it like that.
The handling is probably whats keeping it from being more relaxed in its enclosure.
Hmm, thats weird.. Perhaps just rip off the crickets back legs to slow them down.
I dont think its anything to worry about.
Size of tarantulas is most commonly measured from tip of leg i to tip of leg iv btw. Referred to as DLS. (Diagonal legspan)
Not really. Tarantulas universally are quite simple to maintain. Most species could survive in a plastic box with a few holes in the top and a water dish.
Husbandry does not equate to a species being advanced or not. As its negligible in its differences.
Venom is a multiplying factor. Speed...
Tarantulas are opportunistic feeders. They dont exactly get "hungry". They eat till you stop giving food.
Its up to you, the keeper, to manage the feeding. And its best ime to keep the abdomen size in the parameters i mention.
I use 8 oz deli cups. Not tons of surface area on top, and theyre quite deep. Theyre perfect for virtually all adult spiders. The absolute largest i use 16oz deli cups.
All water dishes that are wider than they are deep i hate using.
Feeding schedules are slowly becoming a pet peeve of mine. There are select situations they can work, but for the average keeper like myself they are nothing but a waste of time.
Feed based on the abdomen size and size of the specimen. Young spiders should be fed much more heavily than adults...
Certainly a more maintenance heavy way to do things.. I cant see moisture reliant species being very comfortable in such an environment. Having to hover near the water dish constantly.
Probably one of those things you can do, but shouldnt bother.