That camera is nothing special.
It is a small sensor camera which needs very good light to get "ok" results.
The lens is not very wide, and so in smaller venues it will not easily keep the entire subject in frame.
This camera is quite a bit wider angle, much larger sensor for better image quality.
http/www.amazon.co.uk/Sony-DSCRX10-Advanced-Digital-Tiltable/dp/B00FYPUXPI/ref=sr_1_1?s=electronics&ie=UTF8&qid=1458837788&sr=1-1&keywords=sony+rx10
Only limitation is the 30minutes of max video for each time you press the record button. If you need longer recordings invest in a Panasonic GH3 or GH4 and an appropriate lens.
Don't forget a decent tripod. If you anticipate doing more than static angles, an oil-damped tilt-pan head is best. Heavy tripods are more stable than flimsy ones.
Given that audio is very important, don't skimp on the mic quality and remember you want the microphone as close to the subject as possible. The Panasonics have an add on for higher end video which allows them to accept XLR imput either from the board (if you have a sound board) or from a high end microphone. But even a RØDE VideoMic Pro can give pretty decent results. They key is how close you get the mic. You can get fancy if you want and hide the mic right next to the subject and plug it in to a low cost FM transmitter and then plug a corresponding low cost FM receiver in to the mic line in on the camera. Just make sure the tx/rx has adjustable frequencies as which freqs are the cleanest will vary a little from place to place.