Shupack,
Your instillation looks real clean. But you have to spring for the adjustable valve

About "Extras" that is the age old question : Is it a necessity or niceity? A glow driver is probably a necessity in this plane and mine will have one. Redundant Rx and Battery I would put in the niceity box. If your running a larger capacity battery and a new Rx I wouldn't add the weight in this size plane. (IMHO) Your going to glass it and like you said "Mind the grams..." Keep posting. Both you ,Juice and others posting have set a high bar for my Corsair. Pete