my little red 90

I am now the proud owner (it was free) of a cowl induction fiberglass lift off hood for my 90 LX. I want to attach it with Dzus fasteners, but don't know how many is enough. I was thinking 2 down each side and 2 in front.
The ones on the sides should be easy enough by attaching into the vertical lip of the fender with pop rivets. The front 2 look like more of a challenge. What have you dzus users done?

Thanks for any help.