Hi.
I am an experienced Linux system administrator with exact skillset you need (CentOS / Plesk / Apache / Nginx / SSH / Postfix, SSL, TLS).
I estimate the job to take 3 hours.
Referring to your project description, i believe you could benefit from ongoing sysadmin maintenance. So I'd like to offer you our server management services. Our standard package includes full administration, monitoring, backups, security updates, 24/7/365 live phone support for urgent tickets and unlimited support hours. The prices start at $90/month for a single machine, discounts available on bulk orders.
PLEASE NOTE: If you sign up, the project comes as FREE setup.
You will get a low hourly rate ($15/hour) as our subscriber. Our regular non-subscription rate is $30/hour.
Please contact me to discuss the details.
Looking forward to hearing from you.
Best regards, Nick Keefen
NK Support