RE: Brio - Glow to Electric
If you are going to fly at Nats, there is some cushion to the weight limit depending on what class you fly.
Your batteries are heavy - Rhinos? They are like the heaviest I've seen, I have a pair about the same weight. I'm now flying 4500mah packs, and most brands are closer to 1000g. My Zippy 5000mah packs are closer to 1100g.
Also what Joe said about Rx pack - I run a pair of 450mah lipos or a single 800mah lipo, that's fine for a day of flying, should only be about an ounce or less.