have a look at printbite - works great for pet-g.

If filament is building up on the outside of your nozzle, then there's something wrong. It shouldn't.

And as far as pla goes - don't listen to the vast majority of the interweb. They're still stuck 5 years ago.
Modern filaments are way better.
Also a lot more choice now than there used to be.
The newer filaments are pretty pricey, but a couple I can definitely recommend are ninjateks armadillo - a rigid polyurethane.
Innofill's pro 1.
And taulman nylon 645. That's the only one that doesn't like printbite. But it prints incredibly well for a nylon. Probably the best to print with I#ve yet tried.

Also have a look at: https://globalfsd.com/
Great source for trying out different types of filament.

One thing to bear in mind. The settings you have work for you, in your workshop with your specific printer.
They probably won't work for me.
Also have alook at deltas. I3's are fine (I think that's all you have). But very slow and a lot of movement and vibration that effects a lot of printing aspects.

Pet-g is interesting stuff and it does depend a lot of make. At the end of the day you need to print it slow and not that hot.
For most things I still find pla superior.
That said, If I could afford it I'd probably switch to pro 1 or armadillo for everyday prints. The armadillo
in particular, is awesome stuff.