There's some confusion going on here. DO NOT buy the Losi 3-wire servo and 27MHz Receiver Combo (LOSB0830), it will not work with the combo kit you bought.
The combo you bought, LOSB9593 is the newer brushless/2.4GHz combo that Losi recently came out with. It's a brushless ESC and 2.4GHz receiver all in one. It must be used with a Losi or Spektrum 2.4GHz transmitter.
The older brushless combo, LOSB9594, which is the system in the instructions you linked to, uses a seperate ESC and does not include a receiver. If you wanted to use it with the stock 27MHz transmitter then you had to buy the Losi 3-wire servo and 27MHz Receiver Combo LOSB0830. This doesn't work too well because 27MHz AM gets a lot of interference and causes it to glitch a lot, so it was best to buy a 2.4GHz radio and receiver for it.
In order to use the kit you bought you have to get a Losi or Spektrum 2.4ghz surface transmitter. The one you linked to will work fine, but you can use a Losi radio instead which should be cheaper on ebay.
Here's one I found in a quick search, and will work great with your setup. http://www.ebay.com/itm/NEW-Losi-Spe...item46013ecaa9