Looks great man. My bottle is mounted on the hump between the rear seats. I ran my supply line under the carpet, along the rocker panel trim, and exited the passenger compartment through a grommet behind the kick panel. I placed the grommet beside the ECM wiring harness bulkhead behind the passenger side fender.
You might think about getting a remote bottle opener if you havent already. The bottle is difficult to open when it's hidden like that.
I mounted my solenoids on the accessory brackets where the smog pump used to be. The shorter the line from your solenoids to your nozzle, the better. My relay resides behind the passenger headlight, near the factory fan relay.
A custom aluminum cold air pipe is threaded for my nozzle. If you're using rubber ducting, NX sells a "nut" that works well to hold the nozzle in the flexible ducting.
Some worthwhile accessories to check into are: Dynotune digital pressure gauge. Electronic wide open throttle switch (mount this under your dash - tap into the TPS signal wire near the ecm plug.)
I always hate the cheesey & cheap (no offense) switches that come with the kits. Autozone is now carrying the "fighter jet" flip up switch as seen on F&F. It runs about $10 and is of very high quality.
As for heater and purge, a cool trick is to integrate them into your factory dash using factory switches for opions that your car didnt have. IE My foglight switch controls my heater and my factory momentary defrost switch controls my purge.
I hope any of this information is helpful. Good luck w/ your install!