I guess the pg with the nic would be minimal and I can still have a high vg ratio. Is that correct?
Yes, I cut my PG NIC from 100mg per ml down to 50mg per ml just for easier/safer mixing.
You could also cut it down by adding 50% VG instead of PG so you have a 50/50 mix if desired.
And at 2% NIC it only comes out to 0.6ml of PG I'm adding, so it doesn't do much to bother a high VG mix.
If using 100mg that amount would be cut in half of course.
The other advantage to PG NIC it's easier to get the NIC + PG mixed up better before using.
BTW: Storage in the freezer is very common/normal for most all of us.