The only questions will be that you have to transfer the money to buy from your own country so that will be known to your bank in your own country. That may raise questions but dont know
all my monthly bank statements are always 2 or 3 pages. If youre renting they ask for proof of accomodation. If you own the home, they ask for tabian baan etc
Yes. Its a pain. Just upload the page that is most relavent. They dont really need much of it anyway ! Dont forget to send a picture of you holding your open passport on the photograph page like this !. I forgot