I need recomendations on a camera

Hey guys. I need a camera that takes high quality video zoomed in at 50'. Also needs to have input for audio. I'll be filming under florescent light. Preferably in the 1000-1500$ range if possible.

Get a new or used Canon T3i and then slap a 75-300mm IS USM lens on there it'll take great video and has an AUX audio input for a mic or something...