they are fairly large..i guess i've read up to 7" i have a mature male that is only 5" and a female that is about half an inch or so larger..not sure how much growing she has to do though..shes a pretty new member of the crew.
they are pretty easy to care for...a bit skittish..and sometimes i've seen my male freak out randomly. other times, he seems pretty mellow.
if you've had some time under your belt with keeping tarantulas, and particularly some faster species..you will do just fine keeping this species. maybe even start off with a smaller one to get used to that particular one as it gets older.
very cool species.prob one of the fastest growing t's i have.temperment wise id say my female is a bit psycho.gotta be careful when watering.she will often throw threat displays and try to attack the air lol.psalms are prob my favorite nw aboreal.shes out of her hide all the time and doesnt web the tank up as much as the irminia ive kept so they make a good display spider.