You shouldnt be breaking those any time soon. This thing is tougher than you think. And so you know, when you buy 1 hinge pin you end up with ALL of them. Thats how Kyosho sells them. So be prepared if you decide to get the spares up front.
You should have had the linkages between the kit, mill and servos.
Turbuckles arent too bad on price. But again, you shouldnt need them right away. When you are just about done with break-in you will see what I mean.
On the #1 and #2 philips. Get the metric. They fit more snug. WFC makes good ones.
OFNA makes some damn nice drivers. Drill blank based, inexpensive, and guarenteed forever. I've actually pulled out stripped screws from my buddies rides with my set. Makes a huge difference.
The OFNA box I listed should only set you back 50-55 bucks and has the biggest starting motor out right now. You will want the torque to get that mill turned over. Takes any power source you can throw at it. Even your car battery.
Tires?!?! Do you have a set of knuckles? I found these to work best right now. Hook up great on both asphalt and dirt and dont desintigrate before your eyes like the step pins.