doubt about cisco routers

Hi folks

I’m new here and searching for help because i have to prepare a good network topology in which can stablish a connesction between 5 offices, but now i dont have any idea about what kind of router and switch do i use. the scenary is this

main office with 30 pcs 1 dns server, 1 mail server and db server and 5 branches with 20 pcs each one all office with different isp with a satatic ip. is it work ?

i want to send and receive packets trough a vpn tunnel but i’d like to know what is the best equipment (models) including firewall, vpn security, and all features inside.

please let me know it , any help is welcome