There's a lot of choice here, but of the two pickups you mentioned I'd advise either a calibrated Warpig set or a calibrated Nailbomb set rather than mixing the two. The product page doesn't really make it clear that the neck pickup in a calibrated set is a totally different spec, wound & voiced to work specifically with the bridge pickup.
e.g. The Nailbomb bridge is 16k, but the neck is around 10k (don't have a Nailbomb neck so don't know the exact specs). In other words, the specs on the product page are for the bridge.
I don't have a Warpig, but do have a Nailbomb bridge. It's a very versatile, dynamic pickup that cleans up really nicely. But on the overdrive channel it's an absolute animal :twisted: - it doesn't have massively high output, but seems to give the sound a really percussive "cut" that makes riffs jump out of the amp. You can rock out or thrash out equally well with a NB :)
Aside from the WP & NB, there are a fair few people here who think the Miracle Man is the best metal pickup out there (it is VERY good for fast heavy riffage). My own favourite is the Holy Diver which is so much more than an 80s rock pickup & capable of some serious brutality :twisted:
One alternative to calibrated sets is to use the Cold Sweat neck - by all accounts people have matched it with NB or MM bridge & got very good results.