The 0610i can do 10 amps and 250w and its $10 more. I have it and it's awsome. You will need an external power supply, but I bet you could find an xbox 360 power supply on ebay for $30 and modify the plug. They are 12 volts rated for 16.5 amps, or something slightly less than that depending on the version/age.
Check out my custom converted 8ight:
Sub 7lb, lowest CG of any 1/8 buggy