I've got a Miracle Man in my PRS Standard 24 and alot of the time I play the styles that you do. I also have an ENGL powerball. Personally I think the Warpig would be total overkill. It's not really geared towards the thing you are looking for (I had a warpig before and didn't think it suited it too well) where as the Miracle Man would do that. Very smooth but biting high end, chunky low end and a good amount of mids in there.
As you will be getting an ENGL at some point, the amount of low end already in those amps is going to be plenty, I wouldn't suggest going with the Warpig as you're going to get a massive amount of low end added to an already massive sounding signal.