First post! Been lurking awhile now.
As mentioned in other posts on this topic be sure to get your tires mounted before drilling the rims since could be a liability for them.
Great point with the cast hubs kinda seems the drilling hubs would be stronger with more studs but bein cast quite the opposite especially if a stud doesn't grab right.
Glad this came up tho as I plan to do this soon and up to now was leaning toward the hub drilling, but now definitely drilling the rims much easier and could be fixed on the fly much easier