Almost...
You do have 30 ml of 24 mg/ml, but the PG/VG ratio isn't quite right (if I did the math correctly).
You have 13 ml PG/nic and 4.5 ml flavor which gives you 17.5 ml of PG (17/30*100 = 58.3% PG).
Then you have 7 ml of VG/nic and 5 ml of straight VG, which gives you 12 ml of VG in the mix (12/30*100 = 40% VG)
Then you have 0.5 ml of water (0.5/30*100 = 1.67% water).
I think...