Oh I didn't notice above that you have already placed your order. I would have left you alone if I had. Something I see missing is a meter to check your batteries. Many of us buy a loaded voltmeter to do that, but I went the route of using a standard multimeter and just pushing on a control surface to put a load on it. If you happen to be one of the unlucky ones who gets a bad battery, that will save you an airplane. It's also inevitable that you'll want a computerized charger too. I see used ones from time to time going for $20-$30, so that doesn't have to be an expensive proposition. Just be sure to get one that cycles so you can verify the capacity of your batteries when they are new and every 6 months or so thereafter.