Having traded for awhile using automated systems, winning and losing, I would highly suggest using TICK DATA when you trade. Automated trading in the sense where you are using technical indicators to make your trading decisions is very competitive and very fast. Meaning, if you are using data such as 1min data, you are going to be behind the profitable trades, if there are any for your system.
My point is, use tick data no matter what platform you use. Ninja Trader is pretty good. Sign up for the tick data, and use that to trade. You'll have a better shot at being profitable if you are using technical indicators.