Need help selecting components for your server?

Question

Computers

I welcome everyone. I ask for help in selecting components for the server in an adequate amount.
Actually on the server there will be 2 sites on WP, as well as a personal mailing service MailWizz, and Perfex CRM, connected to one of the sites by synchronizing goods and orders. It is advisable to keep within 50-70 thousand, if possible)