Hi Andrea, if you are going to have a band I recommend to have DJ too. When people is eating, fot the first dance, when the band is resting you will need the DJ.
I think we will get a band and a DJ. Bands usually play3/4 "tandas" and take breaks. The DJ will plays the music the band will not (ex: music in English or Vallenato).
I like your combo for the church :)
Click on each tool to see a sample.