[lincpimp]

You can run the castle system on nimhs, just gear it for around 35mph and you should be fine. Load will determine how many amps you draw, so less load will lighten the load on the nimhs. You can also set the punch control high, like 70+%, that will cut down the amp spikes from accelerating. I could not see wasting money on the outdated slovak system, considering the castle system is the same price. Plus when you do decide to go lipo, you will have a much better system to use.