I am sure someone will chime in on the best approach, I would prob. just mig it in and skim coat it, Leading the seam would last a lot longer but be a bit more of a hit on the checkbook.
It all depends on your tastes, I prefer the lead myself that is what I payed for on my panels ...an it was not cheap to get it done by a professional with the expierience if you have access to one.
just my thoughts
