At what point did you find you wanted/needed to have the firewall forward kit? I have the wings ready to cover, tail surfaces all mounted, set and ready to cover. Fuselage controls are in, I am working on the seat installation now. I have not run the rudder cables yet, no panel work started, the panel will be old school I think. I like the Garman G3X but I am so comfortable with round things to look at but would like to add an AOA system. I have not yet compared costs of both ways. Gear is not yet on. I have the means to purchase the firewall forward now but I don't want this stuff any sooner than needed.