Hey Tim64,
I would as well prefer to shove preflop with 15BBs as you will most likely have to play the hand OOP postflop and you will be commited to shove as c-bet.
As played, easy shove against this 60/10 fish. His range is so wide that you're push is ++EV. Specially with such a nice paired board with 1 high card.
Regards,
burek2000