Have a look at these 2s packs
http://www.hobbyking.com/hobbyking/s...Lipo_Pack.html
Obviously you will need 2 of them - they are far better than any 'top brand' packs I have had and they are far better value even if you use express shipping.
1400kv definate no no on 4s go for the 1900 or 2050........2650s good if your on a wide open track with lots of open throttle.
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