Mount 2 Tv's to wall

Need 2 TV's mounted to the wall, 1 is a 50inch screen TV and the other a 65inch TV. have brackets. Also need 2 whiteboards put onto the wall. [1 will need taking down and remounting] the other just needs mounting. need a quote and to be done this week if possible. i dont know how much this would cost so have not put in a cost. probably take 4 hours?