I agree with your picks other than Porto for Zenit. Very tough group for Celtic, but they all look rather hard to be honest.
Shaktar warned about the goat thing too... I won't comment...
So, don't know a lot about the Pukki dude, other than he should be a good scorer at least in domestic competition. I really hope the new signings start doing something. The team is just not the same without Wanyama, Wilson and Hooper.
Also, my league prediction for the top four in the BPL:
Man Citeh, U, Tottenham, Chelsea.
I think the bottom four is harder to choose.
Also, if Bale is being sold and Citeh and Chelsea have all this cash why not go for him? For me Bale-Negredo-Navas would be a nice front three!!