Mmm, the more I thought about what you said, the more concerns I have, so let me adress those first
- If you're having it stay a week at each person's house, how do you intend on transporting?
- How will you keep the temperature stable when transporting?
- Do you realize a tarantula who is dropped will basically just rupture?
- That taken into consideration, isn't moving him/her from house to house potentially endagering the animal, as the transport of ANY animal should only occur when absolutely necesarry due to the stress, risk of draft, risk of escape, risk of injury, etc?
- Will she/he be staying in the same aquarium from place to place? In different ones? If so, will you all make sure you have the same subtrate, method of heating, tank temp, etc. to make sure he/she doesn't get stressed and die?
- Will you be keeping his/her diet consistent from place to place?
- Do you or the other people have an animal that might hurt the tarantula? Younger siblings? Disapproving parents?
- What do you intend on doing if the animal turns out to NOT be handle-able?
- What size enclosure will the animal be kept in, and with what substrate, shelter, food, heating method, etc. etc.
- Are you aware of the lifespan of some species? I've heard of females of several types living to be over 15.
- Where will you be getting the tarantula? They often times come with internal and external parasites, which you will then have to pay to treat.
- Have you made sure the species you are seeking isn't venemous? Even if it isn't, it can cause a deadly allergic reaction just like a bee sting.
- Are you getting a defanged tarantula? This stresses the animal, makes it more difficult to eat, etc.
All that said, Chilean Rosehairs are supposed to be fairly handleable. Key word, supposed to be. Mine is not even slightly handleable. Furthermore, as with any tarantula... its not a puppy or kitten. They don't particularly like being held, they have to be handled very very gently and low to the ground, and many give off itchy, irritating hairs when you handle them. They are really a pet that you watch and feed and enjoy like a fish, not one that you hold and carry around.
If you read up on tarantulas and decide you want something that doesn't need live food, is more tollerant of handling, won't bite, etc. I would strongly suggest a male madagascar hissing cockroach. (I say male because most females you buy will be knocked up) They don't mind handling, are pretty hardy, don't require live feed, can live off of old fruits, veggies, and other human foods, don't need as much heating etc. as tarantulas, and will not explode if you drop them.
I've had a Chilean Rosehair female for a few years now, though as of lately she's really been slowing down. I'm sure if you google'd it, you could find plenty of info on your species though 
