The batts that Dirt Hawg mentioned will work as, as well as the pack you listed inthe opening post. Both packs will work just fine for a stock MG. My fav set of packs are these:
http://www.hobbyking.com/hobbyking/s...dProduct=16194
Yup that's the prgramming card you need. You can either buy from Horizon Hobby or OSE. They both have them for the same price.
That charger will work fine. You will need a power supply or marine battery for it though. If you buy a power supply make sure it puts out enough wattage so that you can take advantage of the chargers 200watt 10amp ability.
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http://www.commonsenserc.com/product...2i3grkkdc7brv2
* If you are on a budget, I have read guys having good luck with this charger and you won't need a power supply. Only good for 50 watts but that's ok, just takes a little longer to chare a battery. Most AC/DC chargers are 50 watts:
http://www.hobbyhot.com/gt-power-dua...-1-pr-905.html
If you are ordering batts from HK, grab yourself some of the 5.5mm bullets the sale. Change out the small bullets that connect the motor with the esc and change the deans. Will give you a much more reliable setup that way!