Ceramic coatings, diy or pro?

[MDMetal]

So I'm picking up a new to me car which has pretty flawless paintwork, I'm admittedly terrible for washing my car regularly and it usually ends up being once every 3 months. Give this is my first properly nice car I'd like to keep it as pristine as possible whilst still using it.

So ceramics are the way to go? But is it better to DIY or go pro?

I'm happy to do it myself however I'm aware that some ceramic coatings can dry very hard and if you mess them up... so maybe getting it done properly is a sensible choice?

[MDMetal]

it's new to me and doesn't have any obviously flaws but yes it should be cleaned properly first I have a rotary polisher but still tempted by the pro route I guess (and lazy)