I want to setup a printing business (business cards, invitations etc)

i just have questions:

1. What printers are the best for this?

2. Where can i get different papers for different prints yung makakamura ako?

3. since the prints will have different sizes anong pwedeng pang cut sa kanila pag-icucut mo na yung print?

4. mas ok ba yung stock ink ng printers or yung mga CISS?

Thanks sa Help!