hi im a beginner in rc (ive only flown 3 channel before) and i was wondering whether anyone could help me regarding the hawk sky which seems like a good beginner plane.. i have seen people turn it into a "hawk fighter" by clipping the wings. do you just chop it off with a xacto knife or do you have to do something special. explain in detail please since im a beginner. also which extra battery type do you recommend? 1800 mah, 2000 mah, or 2200. any other helpful tips or mods would be great thank you!