I'd like to predict that pikes will spawn in your pond. I don't see any reasons why they shouldn't do that. Shallow, weedy areas and about 75 pikes (if only they all were one sex but I find it hard to believe) in - that would be no wonder at all.
They succesfully reproduce in countries with various climatic conditions.

In such case I'd try to catch all the pikes you can. There always will be others.

Dwight mentioned that large pikes eat only small fish. I don't agree to this. Yes, in the summer they eat much small fish but especially in spring and autumn they like bigger fish too. Why? Easy - why should it waste energy while catching 10 small minnows if the same result can be achieved with one larger fish? After spring spawn they feel weak and try to recover. They also eat much before winter and it's well known that big lures work well in autumn.