Ray10s… -10 or -38??

Hi all
Currently looking at pulling the trigger on some SCS RAY10s for my 5th Gen. since they’re big money to get in Canada, I want to be sure I’m choosing correctly. -10 or -38? currently running TRD PRO wheels with KO2s at 275/70/27 with 1.25” spacer.
planning to move up to 285s when these tires are done. I just don’t have enough experience to make the best call here. And don’t want to choose wrong.
any input would be greatly appreciated.
I’ll try to attach a pic of current set up.

 

With -38 you can ditch the wheels spacers.

 

True. But I calculate offset currently with spacers to be -26 (wheels at +5, 1.25” spacer is -31mm). -38 would be a bit more “poke” obviously. Then the 285s would be a touch wider than the 275s obviously.
If I need to run 275s on a -38 offset wheel for a bit would that be safe?
Thx for the reply!