Good choice on the g.aureostriata. That was my first T, well first 2 actually, though I only got small spiderlings.
That was about 6 months ago. I now have 27 tarantulas, mostly spiderlings of various sizes but I also recently got an adult rosehair and pinktoe (avicularia avicularia). They're MORE addictive than corn snakes, in my opinion, because they don't need much space or heating, and if I am raising their food anyway, it doesn't cost any more to feed them.
For the spiderlings I use mostly Amac acrylic cubes of various sizes. They're cheap and totally clear and look nice.
All of my tarantulas take up maybe 1/2 the space on top of my corn rack. That will increase quite a bit when my 4 chacos get to full size of 7-9 inches =) I also have 4 L. Parahybana slings which will get to 8-9 inches eventually. That's years away though.
Pinhead crickets are hard to get arund here so I feed the small spiderlings tiny mealworms, just crush their heads and they won't burrow. I also cut them in half for the smaller slings so they can smell them easier and don't have any trouble getting through the exoskeleton.
They also get crickets as often as possible when I can get the small ones from the local show. I've started a b.dubia roach colony that will hopefully start reproducing one day and provide all the food I need for all of them.
The mealworms at least are easy to breed so I always have food around if I can't get crickets.
As Waldo mentioned, you don't want them to fall and get hurt or killed so fill the viv with substrate so there is only about 4 inches or so to the screen top. Another reason to use a smaller viv when they are only a couple inches in size. A small kritter keeper would work well.
