In that list I'd most likely cut Negator for Gouger, considering that they have similar drawbacks (you'll never want to/ can't block with them), while Gouger is a point smaller on either end, but isn't as vulnerable. Of course, it's important to note that they don't play nice with Wastelands and Factories, but if Smallpox and Sinkhole are working for you, then I don't see a whole lot of reason that Gouger will be frequently dead.

Also, how's the agro match?