i8nt2lo
+1y
First, set your yourself a budget and decide what you want to spend the most on. You SHOULD go with a manifold for the valves. Individual valves with all the fittings will cost you as much or more than an AccuAir manifold. And it would be a LOT LESS work. Even if you don't go with the entire AccuAir set up with ride leveling, I would DEFINITELY go with the manifold. Easy to install and well WELL worth the money. I would also throw in a water trap at the tank to just keep things clean and easy to maintain.
As for bags and what not, everyone is gonna have their personal preference. I personally love Slams and that's all I use. Bottom line, you're gonna get what you pay for. Most kits I've seen don't have everything you'll need, and from my experience I have noticed that before a build I may end up with different stuff from different dealers. Sometimes you can get tanks with certain port configurations from one spot and not from another, or they both may have them and one is cheaper. Do your homework.
Last but not least, do not be afraid to call these companies and talk with these people. Ricky from Suicide is really cool to deal with, Jason from AVS, Brian from Illusive, so on and so on. Every time I've had issues I've been able to get them squared away pretty quickly from a phone call.
Good luck with it all man.