Considering cPanel - various questions

Hi there! I'm considerung cPanel as my first panel solution and I have a few questions, sorry in for that :) I'm currently hosting multiple websites on multiple servers without a panel solution. The setup is the same for each server:

• Linode
• AlmaLinux 9.1 managed via command line
• LiteSpeed Web Server 6.1
• PHP 8.1
• multiple websites managed via native LiteSpeed admin panel & OS command line
• 'external' DNS (DNS Made Easy)

What I mainly want to achieve with a panel solution:

• secure system without me manually caring for each detail
• ability to backup individual websites/virtual hosts conveniently and automatically
• more conveniently setup the basics for new additional websites in the future

What I don't want to:

• see a drop in performance
• switch OS
• any involvement of Apache or nginx

Various questions:

• Is this 'generally' possible with cPanel?
• Can I use cPanel without any involvement of Apache or nginx?
• Can I continue to use my existing LiteSpeed licences?
• Can I use an external DNS without any issues?
• Honestly, what about performance of websites managed with cPanel vs no panel at all? I have pretty optimized setups, that's a really important to me.
• I guess there's no easy migration process, right?
• Any experience / best practise / known pitfalls for migrating from such setups to cPanel?

Thanks! Eric