That's looking good! Is that a JL sub I see? 10" or 12"?
I have the 12" W6, but like you still mid build!
I managed to keep the RNS by adding an AudioControl LC7 for the RCA's - I had this already from previous car. Made the wiring a lot easier, although I have R32 so battery in boot which is a massive plus!!
What headunit are you using? Where did you get the sub enclosure?