best way to bring wordpress sites from Godaddy to DO droplets?

Hello, I am trying to see what is the best way to bring my wordpress sites from a tipical Godaddy Shared Hosting account into this great droplets, I want to install on them NGINX (to make them fast) and Lets Encrypt (for security) that is why I have done some research and until today I think the best way is to follow up this 3 tutorials:

1. https://www.digitalocean.com/community/tutorials/how-to-install-nginx-on-ubuntu-16-04 2)https://www.digitalocean.com/community/tutorials/how-to-secure-nginx-with-let-s-encrypt-on-ubuntu-16-04
2. https://www.digitalocean.com/community/tutorials/how-to-install-and-secure-phpmyadmin-with-nginx-on-an-ubuntu-14-04-server (only that this tutorial is for 14.04 instead of 16.04) Can somebody please instruct me on how to do it with my 16.04 version.

or it is not necesary to install phpmyadmin to import the database of my godaddy wordpress site by terminal because of my LEMP?

Is this the best way to acomplish my objetive? Of bringing my wordpress sites and install the SSLs,

Thank you,

FT