How to send 1M emails a day with postfix [closed]

I've set up and configured postfix on a test server. it seems to be working. I can send emails to Gmail accounts and I see the email. I've even set it up and running on nodejs. I want to configure this server to reach 200,000 Emails an hour and 2M emails a day. All emails will be about 1MB. I'm aware that data charges apply and I've calculated the data cost for 30TB.

1. What are the server specs required for such a task. my test cloud server has 32GB of RAM, 8 dedicated cores and 2SSDs. Network speed is about 350mpbs on avg.
2. Should I use some different load balancing methods?
3. Emails are stored in a MySQL DB. ive made a nodejs file which has a for loop to get 100 emails from the db and send the email to the following 100 before sending more. any suggestions?
4. Anything else I need to know?

Solution 1:

1. Postfix tuning is not necessary - start to tune Your knowledge about E-Mail System, base on Your questions You have no idea how its working.
2. Your Postfix client (in that case is not a server) could have 512MB RAM and 1 CPU - what is important - You need fast connection
3. Your Postfix client is not important in that case - important is E-Mail Server to which You are trying to deliver messages (are You sure that some one (let say: gmail.com ) will accept 300 000 E-Mails from Your host in one day ? - hahhaha :D - they will cut Your connection immediately and write in Your maillog - please come back later ;) )
4. Loadbalancing ? What for ? - If You are sending message to 500 gmail.com users Your host should establish max 1 connection and using it deliver package of E-mails to gmail.com
5. If You will start to send massive amount of E-mails Your host will receive also big amount of bounces ;) - be ready for it ;)
6. If You have a fresh IP without reputation - You will be blocked for many hours each time when You will try to resend again big amount of E-mails (by many service providers). ... and so on... and so on...

If You would like to deliver big amount of E-Mails, first understand how SMTP protocol is working. On the beginning, I suggest You to rent massmailing service.