Yeah, I don't get too hung up on the final PG/VG ratio. I triple check, at least triple check, my nic math and double check my flavoring math.
If I want "huge" amounts of VG I use PG nic, flavoring and VG no nic. (I mix with 100mg)
If I want a touch of VG I do the same except I have a bottle of 90/10 PG/VG sitting in one of my drawers that I use for my 0-nic PG.
The nic math is important. The flavoring math could be important (there are folks who mix without worrying about the exact flavoring rato and are good that way). Unless you have specific concerns the final PG/VG ratio is the least significant part of the whole thing.
(But, if you are using Loranns, I would recommend not using VG until you have a few experiments under your belt. VG content seems to have an impact with some Loranns' flavoring.)