I have soldered connections, but have not written code yet, because this chip has separate IN/OUT pins for SPI.
Of course they have separate in/out pins, that's how SPI works.

So I'm on the proper way or not?
I think so. But for starters, looking at the image you posted you should send an 8 bit command followed by a 24 bit address (32bits in total), you're only sending 16.