Hey. Go for it, you should have no trouble flying it if you can keep a nitro heli in the air :) Your dx6i will work just fine.
I would stay away from printed props. They just aren't tested. They seem ver interesting and I would love to play around with them when I have some time. I have used the apc props, the 10x4.7 work great. But I've been using graupner props now and they work even better. the 9x5 or 10x5 should do you fine depending on your weight. Just be sure to dynamically ballance the prop to the motor.
As far as chargers go there are a number that will do good. I have a Thunderpower. Just check hobbyking, anything that will charge and balance 3 or 4 cell Lipo batteries will be fine.
Hope that helps, if you have any other questions feel free to ask. And be sure to post pictures when you get it printed!