I sure hope this isn't your first tarantula =). The salmon pink can get to 11+ inches and isnt the most docile tarantula. However, if you've done some reading and you know what your doing you will probabaly encounter few problems, good luck!
thery're awesome spiders, the parahybana's! Switched my male for a female, she arrived yesterday, and has been eating since! think she's on her fourth cricket now.. seems to me that they're quite shy as spiderlings (my male only exited his burrow once, and my new female, is sitting in there munching as i write this) I hope she'll get more bold as she grows though (2" BL now)
Cool that you got your parents to accept your ordering another still arguing with mine on ordering an aboreal sp (wich will be my third T)