@CommanderBacon This species has only recently been discovered and described... I believe it was back in 2016. This is the largest species in the genus, so far. This is the only individual in Canada at the moment - a friend of mine, who used to be one of our biggest dealers, imported a spiderling just for me because she knew how much I loved the genus. Luckily, she turned out female.
I spoke with someone who has filmed them in the wild and he said that the adult females he saw had about a 2.5" body length. I'm guessing that will put her at about 4" DLS full grown. I will have to wait and see. It shouldn't take long... she has a voracious appetite and grows quickly.
Out of all the ones that I have raised from spiderlings - leetzi, perezmilesi, elegans, bertae, ritae and giganteus - she has been the fastest grower by far. Many of those turned out to be males, which makes it even more interesting that she has outgrown even the males of other species.
I got her as a 1/4" spiderling back at the beginning of March 2018. She has moulted five times and she is currently sitting at about 2.5".
All of the species I've had have fallen into the 1.5"-2" range for adult females. The elegans females have been the smallest at 1.5" and my bicolor (formerly chicoi) female used to be the largest at 2".
@CommanderBacon It has not be documented, but it is probably safe to assume that her lifespan will be similar to other females in the genus. Even though she has grown faster, they are all fast growing and differences in their lifespans, from species to species, is likely negligible.
All of the resources online mention that the average lifespan for this genus is about 10 years. I don't believe that is accurate - I believe it is more along the lines of 7-8 years. That has been both my experience and the experience of other hobbyists that I have spoken to who have kept individuals for long periods.