Hi Julius. The 422's are great for fronts and the 534-SS are great for surrounds. But together, you'll notice that the 534-SS are quite a bit larger than the 422's. I usually wouldn't recommend this combo (I prefer the 422's as surrounds in this case). BUT if you're truly a dipole/bipole speaker fan, then go for it. They use the same tweeters and HDX3 crossover technology, so they are a close enough sonic match.
I would get the Pioneer receiver. But that's just because I've heard a lot more customers talking about/using it. The JVC is too new for me to have any feedback on. Maybe someone else might.
Cheers,