19F NMR line spectra I am trying to figure out the NMR spectra of F3P-BH3
I am solving this out using 2nI+1 rule.  IP = 1/2 and IB = 3/2
Hence for this compound, 

(2nIP+1)(2nIB+1) = (2x1X1/2+1)(2X1X3/2+1) =
(2)(4) = 8 lines (quadraplet of doublet)

This is what I came up with, it would be great if you could correct me if I'm wrong. Trying to solve few problems before the exam =)
I think you have got the calculation right. However, I would also consider the coupling between F and H because coupling through 3 bonds is also usually visible. So, each of your 8 lines will be split into four by the H-atoms.
That will be the major part of the spectrum. You would also get weak signals with a different splitting pattern due to the other isotope of boron ($\ce{^10B, I=3}$, abundance=20%).