is it worth doing
Now the discussion is CTMs or Longfields. I would have to go with the Longfields, plus Toyota axles provide more ground clearance and more clearance around the hubs on the outside.
Does the fact that I have 1.5"wheel spacers make it easier to break birfields???
No. It adds load to your knuckle and housing only, not to any inner parts.
Regards,
BigMike