Since to cycle a tank you basically need a source of ammonia, some people have been known to get 1 - 2 pieces of raw shrimp and throw it in their tanks and in essence let it rot to build up the BB in the filters... then over the period of say 2 weeks or so, you test the water and watch the readings to go from 0 up till they are readable, then once you start getting readings you wait for the water to stabilize, and then you can put your new fish in and remove the prawns...
Otherwise, if you have other fish tanks in the house running, you can grab some of the bio media from that tank, and place it into your new filters to help seed the new filters to speed up the whole process...
If you have a spare filter thats hooked up to an established tank, then you can just take the whole filter, move it across and pretty much stick a fish in straight away...
But to answer your original question, i would say, adding the minnows isn;'t really going to do too much for you in this case, since those are such small fish compared to what you are looking at putting in... not to mention, even if you did cycle the tank with the minnows, once you add the wolf fish in, it will add to the bio-load anyway, which will cause a mini-cycle in its own as a best case scenario...
Otherwise, if you have other fish tanks in the house running, you can grab some of the bio media from that tank, and place it into your new filters to help seed the new filters to speed up the whole process...
If you have a spare filter thats hooked up to an established tank, then you can just take the whole filter, move it across and pretty much stick a fish in straight away...
But to answer your original question, i would say, adding the minnows isn;'t really going to do too much for you in this case, since those are such small fish compared to what you are looking at putting in... not to mention, even if you did cycle the tank with the minnows, once you add the wolf fish in, it will add to the bio-load anyway, which will cause a mini-cycle in its own as a best case scenario...