Print settings for 0,8 nozzle

Hey
one of the 1st upgrade was two Bondtech CHT MK8 nozzle as recommended. The changing was easy.
Unfortunately the HotEnd is hardcoded with 0,4. anyway I’ll receive a second pair of HotEnd in June with 0,8 coding.
I also red the troubles with the heatbreaks and that snapmaker eventually will replace it, until then I wanna print with those nozzles.

In Luban the only setting I found was the line width. What’s confusing for me (as an S3D user) I have to set the temperature within the material.
Anyway, what settings do you recommend for PLA?

If I print a vase, I have to reduce the speed to 40mm/s. (Part fan upgrade is ordered)
What Layerheight and speed do you suggest?

Any other recommendations?

BTW: my J1 printed out of the box very well