Host Family Questions?

[ixyz]

Hi!! So I'm studying abroad in Tokyo this summer, and I'm currently emailing my host mom a list of questions. I have a few questions left that I'm not exactly sure how to word in Japanese, so I was wondering if I could get some help with it?

1. Would you be able to give me an estimate on the amount of money that I should bring for our trips?
2. Do you think i should buy a Pocket Wifi or Sim card?
3. Should I purchase my own toiletries?

If anyone could help me with this, it would be EXTREMELY HELPFUL. Thank you