Let me expand on what's been already said......Yes you can run Lipos......but by no means required......a new 700 mAh Nicad will be ok
There are different kinds of Li-XX batteries....Li-ion and Li Fe are a couple....they have the advantage of not needing to charge as often, and hold the voltage better......the down side is with LI-ions you will need a voltage regulator, plus everything for a Li Fe battery such as a good battery charger and longer charge times....a Lipo's max charge current should not exceed 1 amp....
While Li-ions and Li fe batteries seem to be safer during the charge process than Li-pos they still need to be watched
A Lipo if it gets punctured can burn very hot.....they can also burn from over charging.....
In my opinion there is no need to run a lipo get your self a couple of 6V 1100 mAh batteries...that will last you a day of flying plus a tad
Now I do run some Li-Ions in my bigger aircraft...with a voltage regulator....I am getting ready to build a glow trainer I'll run a Nicad 700 mAh in that....