Plenty of Chinese products use top notch parts from all over the world, not limited to using only Chinese parts. And yes, nearly every audio component made in more recent past and today is hybrid Chinese product.
And I don't mean to say the Willsenton cannot be reliable, research it and if it has good track record it could work out.
I don't know impedance curve of your speakers, but with 98db sensitivity 845 should work. With that sensitivity and benign impedance curve 300b is even possible, can't have severe slope or drop down below 6ohm.
Keep in mind 805 and 845 amps are space heaters, they'll heat up your room in summer. But then SET sound sublime.