Looks good Col ,
Re the radios I don’t think they will interfere as long as the antennas are on opposite sides of the - whatever you mount them on, but others might have more experience with that ?
Re placement of radios on the dash - the way I set mine up was bearing in mind where the mike cords will sit, so they don’t interfere with screens and switches.
Jamie
Sent from my iPhone using Tapatalk