Bit the bullet on a Holley 550-937F...

Decided after messing with chips and weak EECiv's that Im done with it all... Im going Holley! I know this particular system is newer, just looking for people who are running one on their fox and can give some insight into what else i might need to buy or watch out for?

I'm definitely thinking of adding the fuel pressure sensor. Also heard that the computer is mounted under the front seat and not the kick panel? I have aftermarket seats where that may not fit, so gotta find somewhere else, haha.

Also any pics are appreciated!! The system is on backorder until December, so probably won't actually see it until after christmas..Boo!