PLO8 variance check

[kylma]

I had the best winning day of my poker yesterday and the worst losing day today.
+$1000 yesterday and -$600 today.
471 hands at PLO8 200 and 1234 hands at PLO8 100.
Did I just experience some super high variance, or is this still normal?

Overall doing good with PLO8 +15 PTBB's per 100 hands over a few thousand hands (since PTO came alive). VPIP about 20% and I play aggressive when I have a hand, only drawing to potential scooping/quartering hands..

Since this has been emotionally a rollarcoaster I'd like to have someone comment about the variance.

1. Were the 2 day swings normal or (much) higher than normal?
2. Bankroll recommendation for PLO8? 30 buyins?
3. Would you lose some (or a lot of) profit if you basically never bluffed in PLO8? (Unless very rarely against very good opponents who are able of folding)